docs - stripping extra new lines

docs/content/guide/dev_guide.compiler.widgets.creating_widgets.ngdoc

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 @name Developer Guide: Angular HTML Compiler: Widgets: Creating Custom Widgets
 @description
 
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 When you create your own widgets, you must set up your own namespace for them.  (See
 dev_guide.bootstrap Initializing Angular} for information about namespaces in angular.)
 
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 Let's say we would like to create a new element type in the namespace `my` that can watch an
 expression and `alert()` the user with each new value:
 
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 <pre>
 // An element widget
 <my:watch exp="name"/>
 </pre>
 
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 You can implement `my:watch` like this:
 
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 <pre>
 angular.widget('my:watch', function(compileElement) {
  var compiler = this;
@@ -35,15 +30,11 @@ angular.widget('my:watch', function(compileElement) {
 </pre>
 
 
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 # Creating a Custom Attribute Widget
 
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 Let's implement the same widget as in the example in Defining an Element Widget, but this time as
 an attribute that can be added to any existing DOM element:
 
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 <pre>
 // An attribute widget (my-watch) in a div tag
 <div my-watch="name">text</div>
@@ -62,11 +53,8 @@ angular.widget('@my:watch', function(expression, compileElement) {
 </pre>
 
 
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 # Live Example of a Custom Element Widget
 
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 <doc:example>
 <doc:source>
 <script>
@@ -88,29 +76,21 @@ angular.widget('my:time', function(compileElement){
 </doc:example>
 
 
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 # Additional Compiler Methods for Custom Widgets
 
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 The angular compiler exposes methods that you may need to use of when writing your own widgets and
 directives.  For example, the `descend()` method lets you control whether the compiler ignores or
 processes child elements of the element it is compiling.  For information on this and other
 compiler methods, see the {@link api/angular.compile Compiler API doc}.
 
 
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 ## Related Topics
 
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 * {@link dev_guide.compiler Angular HTML Compiler}
 * {@link dev_guide.compiler.directives Angular Directives}
 * {@link dev_guide.compiler.widgets Angular Widgets}
 * {@link dev_guide.compiler.directives.creating_directives Creating Custom Directives}
 
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 ## Related API
 
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 * {@link api/angular.compile Compiler API}