CPPlint on travis change: it will run, but not produce errors. (#473)

Author: forejtv

.travis.yml

@@ -36,7 +36,7 @@ matrix:
       compiler: clang
       env: COMPILER=clang++
     - env: NAME="CPP-LINT"
-      script: scripts/run_lint.sh master HEAD
+      script: scripts/run_lint.sh master HEAD || true
 
 script:
   - make -C src minisat2-download