for coverity

.travis.yml

@@ -3,3 +3,19 @@ compiler:
   - gcc
   - clang
 script: make
+
+env:
+  global:
+   # The next declaration is the encrypted COVERITY_SCAN_TOKEN, created
+   #   via the "travis encrypt" command using the project repo's public key
+   - secure: "iZ1KIL71+t+XHQOaOkuRDDvtUoQtvMciKI+U8u9r20dz1C+sdlMNt39e0NBvfA5iLj2mo9QaTVNsf31OucfmykSkbB7adFWsYx/11BdVd2t2PYjb3n07GJjDSodfo/8l3rrglkcB8ewYK37JImvRBQuJVn6MmpU32eZweo73c5o="
+
+addons:
+  coverity_scan:
+    project:
+      name: "lh3/bwa"
+      description: "Build submitted via Travis CI"
+    notification_email: lh3@me.com
+    build_command_prepend: "make clean"
+    build_command:   "make"
+    branch_pattern: dev