Travis: Fix bug preventing versions from being detected.

Author: lilith

travis/before_install.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 #set version from travis_tag if it found
-if [[ $TRAVIS_TAG =~ ^[0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z-]+)?$ ]]; then
+if [[ $TRAVIS_TAG =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z-]+)?$ ]]; then
   echo "Setting build version from tag $TRAVIS_TAG!"
   myVer=$(echo $TRAVIS_TAG | sed -e s/^v//)
   mvn versions:set "-DnewVersion=$myVer"