Add config option to set if the PHP include path should automatically be used when generating the autoloader
Make use-include-path default to false
RequireCommand - rollback if it fails (fixes #1469)
RequireCommand - check if composer.json is writable
Added tests for include path flag
Merge remote-tracking branch 'bamarni/require-command-rollback'
Add explicit return
Merge remote-tracking branch 'pierredup/master'
Update docs, config command and schema with all the config values