fixed crash at start (added missing "require" call) (bnc#867120)

- 3.1.16
Merge pull request #22 from yast/missing_require

fixed crash at start (added missing "require" call) (bnc#867120)
fixed service refresh loop (bnc#867120)

- 3.1.17
Merge pull request #23 from yast/registration_fix

fixed service refresh loop (bnc#867120)
experimental travis CI support
do not use bundler
Create README.md
add coveralls support
Update README.md
Update README.md
Added license and development status badges