Avoid crash
Merge branch 'release-1.1'
Issue #5: Completion of error handling
Merge branch 'fix-issue-5' into release-1.1
Update version
Merge pull request #4 from mattn/avoid-crash

Avoid crash
Fix for some environment missing "getopt_long"
Merge remote-tracking branch 'origin/hotfix-for-env-missing-getopt_long' into release-1.1