fix bug with unknown method on semver command
Merge pull request #201 from cordoval/199-php-fatal-error-call-to-undefined-method-gush-command-pullrequestsemvercommand-runcommands

This PR was merged into cordoval:master branch.

Discussion
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fix bug with semver command

                    
|Q             |A  |
|------------|----------|
|Bug Fix?:     |y  |
|New Feature?: |n  |
|BC Breaks?:   |n  |
|Deprecations?:|n  |
|Tests Pass?:  |n  |
|Fixed Tickets:| #199   |
|License:      |MIT|
|Doc PR:       |   |
                    

patched but will create ticket for test

Commits
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5e1794e83054e0babb34fa8f33a8148ede4d2290 fix bug with unknown method on semver command cordoval