Revert "fix confict with emmet's tab autocompletion #19"

This reverts commit 9b51b18.
Users should add it not plugin. Users doesn't use emmet can not
use tab.

Author: outsideris

README.md

@@ -507,3 +507,16 @@ angular.lowercase(${1:string});
 ```
 angular.uppercase(${1:string});
 ```
+
+## FAQ
+
+#### Can't I use autocompletion with tab when I installed emmet plugin
+
+See [emmet's document](https://github.com/emmetio/emmet-atom#tab-key)
+
+In your `keymap.cson1, add the following code.
+
+```
+'atom-text-editor[data-grammar="text html angular"]:not([mini])':
+  'tab': 'emmet:expand-abbreviation-with-tab'
+```

keymaps/angularjs.cson

@@ -9,8 +9,3 @@
 # https://atom.io/docs/latest/advanced/keymaps
 #'.workspace':
 #  'ctrl-alt-o': 'angularjs:toggle'
-
-# fix to confilct with emmet's tab autocompletion
-# <https://github.com/angular-ui/AngularJS-Atom/issues/19>
-'atom-text-editor[data-grammar="text html angular"]:not([mini])':
-  'tab': 'emmet:expand-abbreviation-with-tab'