docs(typeahead): correct gramatical errors

Author: pkozlowski-opensource

src/typeahead/docs/readme.md

@@ -1,15 +1,15 @@
 Typeahead is a AngularJS version of [Twitter Bootstrap typeahead plugin](http://twitter.github.com/bootstrap/javascript.html#typeahead).
 This directive can be used to quickly create elegant typeheads with any form text input.
 
-It is very well integrated into the AngularJS as it uses subset of the
-[select directive](http://docs.angularjs.org/api/ng.directive:select) syntax, which is very flexible. Supported expressions:
+It is very well integrated into AngularJS as it uses a subset of the
+[select directive](http://docs.angularjs.org/api/ng.directive:select) syntax, which is very flexible. Supported expressions are:
 
 * _label_ for _value_ in _sourceArray_
 * _select_ as _label_ for _value_ in _sourceArray_
 
-The `sourceArray` expression can use a special `$viewValue` variable that corresponds to a value entered inside input by a user.
+The `sourceArray` expression can use a special `$viewValue` variable that corresponds to the value entered inside the input.
 
-Also this directive works with promises and it means that you can retrieve matches using the `$http` service with minimal effort.
+This directive works with promises, meaning you can retrieve matches using the `$http` service with minimal effort.
 
 The typeahead directives provide several attributes: