ci: using unit test and add coveralls.io

Author: chensoft

.travis.yml

@@ -8,10 +8,12 @@ compiler:
 script:
   - export CC=gcc-5
   - export CXX=g++-5
+  - cd test
   - mkdir build
   - cd build
   - cmake ..
   - make
+  - ./test_libchen
 
 addons:
   apt:

README.md

@@ -1,6 +1,7 @@
 # libchen
 
 [![Build Status](https://travis-ci.org/chensoft/libchen.svg?branch=master)](https://travis-ci.org/chensoft/libchen)
+[![Coverage Status](https://coveralls.io/repos/github/chensoft/libchen/badge.svg?branch=master)](https://coveralls.io/github/chensoft/libchen?branch=master)
 
 libchen is a micro C++ foundation framework, it contains many useful and handy methods for creating complex software. It's open-source and released under the MIT License. If you have any questions or advices, feel free to contact me via [email](mailto:admin@chensoft.com).