TASK: Set Neos target version for testing to 4.0

Author: daniellienert

.travis.yml

@@ -17,7 +17,7 @@ matrix:
       env: ES=5
 
 before_install:
-  - export NEOS_TARGET_VERSION=3.0
+  - export NEOS_TARGET_VERSION=4.0
   - cd ..
   - if [ "$ES" = 1 ]; then wget --no-check-certificate https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-1.7.6.zip && unzip elasticsearch-1.7.6.zip && mv elasticsearch-1.7.6 elasticsearch; fi
   - if [ "$ES" = 2 ]; then wget --no-check-certificate https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-2.4.6.zip && unzip elasticsearch-2.4.6.zip && mv elasticsearch-2.4.6 elasticsearch; fi