Modified mvnw permissions to be correctly handled by travis

Author: jurajsomorovsky

.travis.yml

@@ -2,6 +2,9 @@ language: java
 
 sudo: false
 
+before_install:
+  - chmod +x mvnw
+
 script: ./mvnw -Ptravis clean package
 
 jdk:
@@ -16,4 +19,4 @@ branches:
 notifications:
   email:
     recipients:
-    - juraj.somorovsky@hackmanit.de
+    - juraj.somorovsky@hackmanit.de