added coverity scan

.travis.yml

@@ -3,11 +3,22 @@ language: cpp
 compiler:
   - gcc
 
+env:
+  - secure: "yWViwwKTcNhFyfki7_k4hw"
+
 addons:
     apt:
-        update: true
-        packages:
-          - valgrind
+      update: true
+      packages:
+        - valgrind
+    coverity_scan:
+      project:
+        name: falk-werner/fuse-wsfs
+        version: 0.1.0
+        description: websocket filesystem based on libfuse
+      build_command_prepend: "mkdir .coverity_build && cd .coverity_build && cmake -DCMAKE_BUILD_TYPE=Debug -DWITH_EXAMPLE=ON -DWITH_TESTS=ON .."
+      build_command: "make"
+      branch_pattern: coverity_scan
 
 before_install:
   - mkdir -p .deps