Response to GH issues #579 and #663.

use more forgiving 'unstructured' query format in Bing Locations API

See docs: http://msdn.microsoft.com/en-us/library/ff701711.aspx

See: http://docs.travis-ci.com/user/languages/ruby/

allow to pass in language/locale parameter on per request base

This reverts commit 1098046f, reversing
changes made to 8c066874.

Fix: Maxmind migration generator failed on rolling back

Fixes on MaxMind

Readme update for Geocoder.cache usage

[2nd try] fixes postgres "unknown OID" warnings

This reverts commit 2a29613a, reversing
changes made to c5c45940.

Conflicts:
	lib/geocoder/lookups/base.rb

Batch size in rake task for large database

fixes postgres "unknown OID" warnings

rails ActiveModel fix: https://github.com/rails/rails/pull/10498

Update README.md