Fixed Tavis build and typos
Merge pull request #79 from leonkunert/master

Fixed Tavis build and typos
Merge pull request #80 from bvssvni/master

Upgraded
Changed "update.sh" to "upgrade.sh"

Changed "update.sh" to "upgrade.sh" (the actual filename)
Updated Submodules
Merge pull request #83 from leonkunert/master

Updated Submodules
Upgraded