Generate coverage and send it to Code Climate

closes #2029
- when the build passed, on merge (no PR) and right DB and Node version (the first job), Travis generates the coverage report
- when finished, Travis sends the results to Code Climate

.travis.yml

@@ -1,4 +1,5 @@
 language: node_js
+# When changing node version also update it on line 35. 
 node_js:
   - "0.10"
   - "0.12"
@@ -28,3 +29,17 @@ before_install:
 before_script:
   - phantomjs --version
   - casperjs --version
+after_success:
+  - | 
+      if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then
+        if [[ "$DB" = "sqlite3" && "$TRAVIS_NODE_VERSION" = "0.10" ]]; then
+          echo "Generate coverage..."
+          grunt coverage
+          npm install -g codeclimate-test-reporter
+          codeclimate-test-reporter < core/test/coverage/lcov.info
+        else
+          echo "False DB and NODE_VERSION. No coverage generated."
+        fi
+      else
+        echo "This is a PR. No coverage generated."
+      fi