Added link to Backbone.js tab completion and snippets package + added mapping so…

Added link to Backbone.js tab completion and snippets package + added mapping so it's named just Backbone.js

repositories.json

@@ -112,6 +112,7 @@
 		"https://github.com/tanepiper/SublimeText-Nodejs",
 		"https://github.com/technocoreai/SublimeExternalCommand",
 		"https://github.com/titoBouzout/SideBarEnhancements",
+		"https://github.com/tomasztunik/Sublime-Text-2-Backbone.js-package",
 		"https://github.com/virtix/sublime-text-2-mxunit",
 		"https://github.com/witsch/SublimePythonTidy",
 		"https://raw.github.com/colinta/sublime_packages/master/packages.json",
@@ -160,6 +161,7 @@
 		"sublime-kwrite-color-scheme": "KWrite Color Scheme",
 		"sublime-OpenRecentFiles" : "Open Recent Files",
 		"sublime-SplitScreen": "SplitScreen",
+		"Sublime-Text-2-Backbone.js-package": "Backbone.js",
 		"sublime-text-2-clipboard-history": "Clipboard History",
 		"sublime-text-2-git": "Git",
 		"sublime-text-2-github": "GitHub.app Menu",