proper maintenance target
added Travis scripts
use YaST:SLE-12:GA:Travis repository in SLE-12:GA branch
Merge pull request #66 from yast/Travis_for_SLE12

Travis for SLE12
do not hardcode path to rxgettext

Ubuntu by default installs gem binaries to /usr/local/bin
Merge pull request #67 from yast/remove_rxgettext_path

Do not hardcode path to rxgettext
fixed check for rxgettext presence
remove unneeded repositories at Travis

to save downloads and avoid possible failures
Merge pull request #68 from yast/Travis_repos_cleanup

Remove unneeded repositories at Travis
Merge remote-tracking branch 'origin/SLE-12-GA'

Conflicts:
	Rakefile
	travis-tools/travis_setup.sh