docs(tutorial): clarify bower usage

docs/content/tutorial/index.ngdoc

@@ -112,12 +112,7 @@ node --version
   </a>.
 </div>
 
-To install bower:
-```
-npm install -g bower
-```
-
-Once you have Node.js and Bower installed on your machine you can download the tool dependencies by running:
+Once you have Node.js installed on your machine you can download the tool dependencies by running:
 
 ```
 npm install
@@ -130,8 +125,14 @@ This command will download the following tools, into the `node_modules` director
 - [Karma][karma] - unit test runner
 - [Protractor][protractor] - end 2 end test runner
 
-Running `npm install` will also automatically run `bower install`, which will download the Angular
-framework into the `bower_components` directory.
+Running `npm install` will also automatically use bower to download the Angular framework into the
+`bower_components` directory.
+
+<div class="alert alert-info">
+  Note the angular-phonecat project is setup to install and run these utilities via npm scripts.
+  This means that you do not have to have any of these utilities installed globally on your system
+  to follow the tutorial.  See **Installing Helper Tools** below for more information.
+</div>
 
 The project is preconfigured with a number of npm helper scripts to make it easy to run the common
 tasks that you will need while developing:
@@ -141,6 +142,28 @@ tasks that you will need while developing:
 - `npm run protractor` : run the Protractor end 2 end tests
 - `npm run update-webdriver` : install the drivers needed by Protractor
 
+### Install Helper Tools (optional)
+
+The Bower, Http-Server, Karma and Protractor modules are also executables, which can be installed
+globally and run directly from a terminal/command prompt. You don't need to do this to follow the
+tutorial, but if you decide you do want to run them directly, you can install these modules globally
+using, `sudo npm install -g ...`.
+
+For instance to install the Bower command line executable you would do:
+
+```
+sudo npm install -g bower
+```
+
+*(Omit the sudo if running on Windows)*
+
+Then you can run the bower tool directly, such as:
+
+```
+bower install
+```
+
+
 ### Running Development Web Server
 
 While Angular applications are purely client-side code, and it is possible to open them in a web

docs/content/tutorial/step_07.ngdoc

@@ -34,15 +34,15 @@ We are using [Bower][bower] to install client side dependencies.  This step upda
   "private": true,
   "dependencies": {
     "angular": "1.2.x",
-    "angular-mocks": "~1.2.15",
+    "angular-mocks": "~1.2.x",
     "bootstrap": "~3.1.1",
-    "angular-route": "~1.2.15"
+    "angular-route": "~1.2.x"
   }
 }
 ```
 
-The new dependency `"angular-route": "~1.2.15"` tells bower to install a version of the
-angular-route component that is compatible with version 1.2.15.  We must tell bower to download
+The new dependency `"angular-route": "~1.2.x"` tells bower to install a version of the
+angular-route component that is compatible with version 1.2.x.  We must tell bower to download
 and install this dependency.
 
 If you have bower installed globally then you can run `bower install` but for this project we have

docs/content/tutorial/step_11.ngdoc

@@ -33,25 +33,27 @@ We are using [Bower][bower] to install client side dependencies.  This step upda
   "private": true,
   "dependencies": {
     "angular": "1.2.x",
-    "angular-mocks": "~1.2.15",
+    "angular-mocks": "~1.2.x",
     "bootstrap": "~3.1.1",
-    "angular-route": "~1.2.15",
-    "angular-resource": "~1.2.15"
+    "angular-route": "~1.2.x",
+    "angular-resource": "~1.2.x"
   }
 }
 ```
 
-The new dependency `"angular-resource": "~1.2.15"` tells bower to install a version of the
-angular-resource component that is compatible with version 1.2.15.  We must tell bower to download
-and install this dependency.
-
-If you have bower installed globally then you can run `bower install` but for this project we have
-preconfigured npm to run bower install for us:
+The new dependency `"angular-resource": "~1.2.x"` tells bower to install a version of the
+angular-resource component that is compatible with version 1.2.x.  We must ask bower to download
+and install this dependency. We can do this by running:
 
 ```
 npm install
 ```
 
+<div class="alert alert-info">
+  If you have bower installed globally then you can run `bower install` but for this project we have
+  preconfigured `npm install` to run bower for us.
+</div>
+
 
 ## Template
 

docs/content/tutorial/step_12.ngdoc

@@ -37,30 +37,33 @@ We are using [Bower][bower] to install client side dependencies.  This step upda
   "private": true,
   "dependencies": {
     "angular": "1.2.x",
-    "angular-mocks": "~1.2.15",
+    "angular-mocks": "~1.2.x",
     "bootstrap": "~3.1.1",
-    "angular-route": "~1.2.15",
-    "angular-resource": "~1.2.15",
+    "angular-route": "~1.2.x",
+    "angular-resource": "~1.2.x",
     "jquery": "1.10.2",
-    "angular-animate": "~1.2.15"
+    "angular-animate": "~1.2.x"
   }
 }
 ```
 
-* `"angular-animate": "~1.2.15"` tells bower to install a version of the
-angular-animate component that is compatible with version 1.2.15.
+* `"angular-animate": "~1.2.x"` tells bower to install a version of the
+angular-animate component that is compatible with version 1.2.x.
 * `"jquery": "1.10.2"` tells bower to install the 1.1.2 version of JQuery.  Note that this is not an
 Angular library, it is the standard JQuery library.  We can use bower to install a wide range of 3rd
 party libraries.
 
-We must tell bower to download and install these dependencies. If you have bower installed globally
-then you can run `bower install` but for this project we have preconfigured npm to run bower install
-for us:
+We must ask bower to download and install this dependency. We can do this by running:
 
 ```
 npm install
 ```
 
+<div class="alert alert-info">
+  If you have bower installed globally then you can run `bower install` but for this project we have
+  preconfigured `npm install` to run bower for us.
+</div>
+
 
 ## How Animations work with `ngAnimate`