[broken][ruby 2.2.1] output of `git config --get remote.origin.url` terminates with newline

See #21, release log:

• c87a8ac by @rultor: Merge branch '__rultor'
• 6e9e81c by @yegor256: #22 fix in script
• 90e9ef9 by @yegor256: #22 merge script
• 20a3690 by @torbjoernk: fix breakage: git config call ...

Released by Rultor 1.59.10, see build log