Simplify travis sbt commands

Author: ochafik

.travis.yml

@@ -15,7 +15,6 @@ env:
   - secure: DNSLyto/JVJTLMsBxrxK0C0B1/bdHZrDmKxr2ZTgEE6HFTZOLnAB39MD3RS6rnPotZcffdwraBTjYwH21Z8G0byquDyYR0khKdACsW77vy9ZBkNa6YUwlrUov9t2TfdU83QFvjoe8TCBmNqiQqkgB62YO7XS1wIe+pXeFbAqe/U=
 
 script:
-- "export SBT_COMMANDS=\"test\""
-- "[[ $TRAVIS_BRANCH == \"master\" ]] && export SBT_COMMANDS=\"$SBT_COMMANDS publish\""
-- "echo \"SBT_COMMANDS = $SBT_COMMANDS\""
-- sbt ++$TRAVIS_SCALA_VERSION 'set javaOptions += "-Djunit.parallel.threads=2"' $SBT_COMMANDS
+- "[[ $TRAVIS_BRANCH == \"master\" ]] && export CMDS=\"test publish\" || export CMDS=\"test\""
+- "echo \"Commands = $CMDS\""
+- sbt ++$TRAVIS_SCALA_VERSION 'set javaOptions += "-Djunit.parallel.threads=2"' $CMDS