update release install

Author: allanim

.travis.yml

@@ -22,7 +22,7 @@ cache:
 before_install:
   - if [ "$TRAVIS_PULL_REQUEST" = "false" ] ; then
     openssl aes-256-cbc -K $encrypted_f13efdfcd46f_key -iv $encrypted_f13efdfcd46f_iv -in config.tar.enc -out ./config/config.tar -d;
-    cd config; tar xvf config.tar; cd ../;
+    cd config; tar xvf config.tar; rm -rf config.tar; cd ../;
     fi
 
 jobs: