Only use byebug to debug

* Uncomment & re-bundle if you want to use it in development
* Otherwise byebug is added to the appraisal files, which is
unnecessary for CI
Require rgeo-activerecord 1.2

* Version 1.2.0 includes fixes for ActiveRecord 4.2.0
Allow only activerecord 4.0-4.1

The adapter does not currently work with activerecord 4.2.
Version 2.2.1

* Update Readme, History
Enable postgis_schema option in database.yml for postgis creation
Test ruby 2.1.3
Merge pull request #140 from jimmykarily/enable_optional_schema_for_extension

Enable postgis_schema option in database.yml for postgis creation
Remove unnecessary `configuration` argument

* Reverts changes made in #140
Rename local variables
Extract private method #schema_exists?

* Rename local variable
* Add parentheses to assignment in if statement
Format hashes, alphabetize keys :nail_care:
Whitespace
Merge remote-tracking branch 'rgeo/master'

Conflicts:
	activerecord-postgis-adapter.gemspec