Fix deploy script so as not to push release version

.travis.yml

@@ -12,12 +12,4 @@ jdk:
   - oraclejdk8
 
 script:
-  - if [ "$TRAVIS_JDK_VERSION" == "oraclejdk8" ]; then
-      if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then
-        sbt ++$TRAVIS_SCALA_VERSION "; test; publish";
-      else
-        sbt ++$TRAVIS_SCALA_VERSION test;
-      fi;
-    else
-      sbt ++$TRAVIS_SCALA_VERSION test;
-    fi
+  - ./script/travis-deploy.sh

scripts/travis-deploy.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+set -ev
+
+VERSION=`perl -npe "s/version in ThisBuild\s+:=\s+\"(.*)\"/\1/" version.sbt | sed -e "/^$/d"`
+
+# Deploy a snapshot version only for master branch and jdk8
+if [[ "$TRAVIS_JDK_VERSION" == "oraclejdk8" ]]; then 
+  if [[ "$TRAVIS_PULL_REQUEST" == "false" ]] && [[ "$VERSION" == *SNAPSHOT ]]; then
+    sbt ++$TRAVIS_SCALA_VERSION "; test; publish";
+  else
+    sbt ++$TRAVIS_SCALA_VERSION test;
+  fi;
+else
+  sbt ++$TRAVIS_SCALA_VERSION test;
+fi;