Add coveralls

Add coveralls

.travis.yml

@@ -78,7 +78,8 @@ install:
   # This little hack will prevent the test names from being erased in the
   # travis logfile.
   - sed -i 's/\\r//' radare2-regressions/tests.sh
-
+  - pip install coveralls
+  
 script:
   # llvm-symbolizer isn't in PATH, so we need this.
   # (Also, YAML doesn't like underscores)
@@ -98,5 +99,7 @@ script:
   - cd radare2-regressions
   - VERBOSE=1 make $TESTS   # Run the tests, report only regressions as errors.
 
+after_success: coveralls
+
 notifications:
   irc: "chat.freenode.net#radare"