fix(gen-docs): require files without touching PATH

So that it works on latest revision of node...
New version of Node (v0.5.x) does not support require.paths.push().

docs/src/gen-docs.js

@@ -1,10 +1,8 @@
-require.paths.push(__dirname);
-require.paths.push('lib');
-var reader = require('reader.js'),
-    ngdoc = require('ngdoc.js'),
-    writer = require('writer.js'),
-    SiteMap = require('SiteMap.js').SiteMap,
-    appCache = require('appCache.js').appCache,
+var reader = require('./reader.js'),
+    ngdoc = require('./ngdoc.js'),
+    writer = require('./writer.js'),
+    SiteMap = require('./SiteMap.js').SiteMap,
+    appCache = require('./appCache.js').appCache,
     Q = require('qq');
 
 process.on('uncaughtException', function(err) {

docs/src/ngdoc.js

@@ -2,9 +2,9 @@
  * All parsing/transformation code goes here. All code here should be sync to ease testing.
  */
 
-var Showdown = require('showdown').Showdown;
-var DOM = require('dom.js').DOM;
-var htmlEscape = require('dom.js').htmlEscape;
+var Showdown = require('../../lib/showdown').Showdown;
+var DOM = require('./dom.js').DOM;
+var htmlEscape = require('./dom.js').htmlEscape;
 var NEW_LINE = /\n\r?/;
 
 exports.trim = trim;

docs/src/reader.js

@@ -5,8 +5,7 @@
 
 exports.collect = collect;
 
-require.paths.push(__dirname);
-var ngdoc = require('ngdoc.js'),
+var ngdoc = require('./ngdoc.js'),
     Q = require('qq'),
     qfs = require('q-fs');
 

docs/src/writer.js

@@ -2,7 +2,6 @@
  * All writing related code here. This is so that we can separate the async code from sync code
  * for testability
  */
-require.paths.push(__dirname);
 var qfs = require('q-fs');
 var Q = require('qq');
 var OUTPUT_DIR = "build/docs/";