Update Version to 7.7beta1

Merge pull request salesagility#1513 from gymad/hotfix_installer_brok…

…en_issue

fix installer broken

Merge branch 'hotfix'

Updating Travis Branch

Merge branch 'hotfix'

7.6

Merge pull request salesagility#1256 from salesagility/campaignwizard

7.6 RC

Merge pull request salesagility#1237 from salesagility/campaignwizard

version 7.6 beta 2

version 7.6 beta in readme file

version 7.5.3