Lots of various golint fixes

Changes some names to match go conventions
Comments all exported methods
Removes dot imports

storage/doc.go

@@ -1,3 +1,3 @@
-// This package contains storage services for use in the registry application.
-// It should be considered an internal package, as of Go 1.4.
+// Package storage contains storage services for use in the registry
+// application. It should be considered an internal package, as of Go 1.4.
 package storage