3.0.5: Merge remote-tracking branch 'origin/master'

# Conflicts:
#	README.md
#	composer.json
#	src/Lookup/AbstractLookup.php

3.0.4

Updated travis.yml

3.0.3

Updated travis.yml

3.0.2

Added optional API key usage.

3.0.1

Updated readme

3.0.0

Updated readme.

2.2.0

Added suggestion to composer.json

2.1.1

Added versioneye badge.

2.1

Updated readme. Version bump.

2.0

Updated dependencies.