fix a few things

Author: maxkorp

HISTORY.md

@@ -1,7 +1,7 @@
 0.2.0 / 2014-11-24
 ===================
 
-  * Shifted to promises; asynchronous methods are now promise only.
+  * Shifted to promises; asynchronous methods now provide promises.
   * Lots of new methods exposed for merging, pushing, blaming and more.
   * SSH transport now works.
   * Switched generation of native module code from ejsg to Combyne.

README.md

@@ -184,5 +184,4 @@ https://github.com/nodegit/nodegit/compare/refs/tags/0.1.4...0.2.0
 
 This update is wholly and entirely a breaking one, and older versions won't be
 maintained. For the purpose of migration, perhaps the biggest point to make
-is that async methods now use promises, rather than taking callbacks. additionally,
-lots of method and property names have changed.
+is that async methods can now use promises, rather than just taking callbacks. Additionally, lots of method and property names have changed.