Minor tweaks to README

README.md

@@ -5,12 +5,12 @@
 # JSON Store
 
 JSON store is a simple replacement for shelve. It writes JSON serialized files,
-accepts unicode keys, tracks whether the store has been changed since last
+accepts unicode keys, and tracks whether the store has been changed since last
 sync. It has no dependencies.
 
-JSON store is not intended for large stores. Everything is in memory and
-sync() writes the whole store to disk.
+JSON store is intended for smaller stores. Everything is kept in memory and `sync()`
+writes the whole store to disk.
 
-For issues and development, see it's GitHub page:
+For issues and development, see:
 
 https://github.com/brainsik/json-store