Merge pull request #82 from mehran-prs/patch-1

Fix typo

Author: tonyghita

README.md

@@ -40,7 +40,7 @@ log.Printf("value: %#v", result)
 You're welcome to install the v1 version of this library.
 
 ## Cache
-This implementation contains a very basic cache that is intended only to be used for short lived DataLoaders (i.e. DataLoaders that ony exsist for the life of an http request). You may use your own implementation if you want.
+This implementation contains a very basic cache that is intended only to be used for short lived DataLoaders (i.e. DataLoaders that only exist for the life of an http request). You may use your own implementation if you want.
 
 > it also has a `NoCache` type that implements the cache interface but all methods are noop. If you do not wish to cache anything.