Rubocop cleanup.
Lazily loading the image info - Instead of re-calling the command line on every info check.
Updated ignores.
Update travis-ci link and icon
Updated code climate link and badge
Now passing tests. Better info lazy loading.
Removing support for 1.8
Switched ree support with rbx
Updated tested versions.
Added ruby 2.1.1
Merge remote-tracking branch 'upstream/master'

Conflicts:
	spec/lib/mini_magick/image_spec.rb
	spec/spec_helper.rb
First steps towards lazy running of commands.
Run commands only when result is needed.
Moved command_queued assignment to after setting the command, this is important for cases where the block access the current images properties.
Some more styling and spelling improvements.
Info initialization was missing.
Making sure tests pass.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lib/mini_magick/image.rb
	spec/lib/mini_magick/image_spec.rb
Rubocop cleanup.
Merge with nadavshatz fork