update README

README.md

@@ -1,12 +1,14 @@
 # BSFL
 
+[![Build Status](https://travis-ci.org/SkypLabs/bsfl.svg?branch=master)](https://travis-ci.org/SkypLabs/bsfl)
+
 The Bash Shell Function Library (BSFL) is a small bash script that acts as a library for bash scripts. It provides a couple of functions that makes the lives of most people using shell scripts a bit easier.
 
 This project is a fork of the original work of Louwrentius.
 
 ## Getting started
 
-In order to use BSFL functions, you have to include the library in your bash scripts. You can do it with an absolute path :
+In order to use BSFL, you have to include the library in your bash scripts. You can do it with an absolute path :
 
     source <absolute path to BSFL>
 
@@ -24,6 +26,19 @@ For example :
     declare -r DIR=$(cd "$(dirname "$0")" && pwd)
     source $DIR/../lib/bsfl.sh
 
+## What's next ?
+
+The best way to learn how BSFL works is to look at the examples available in the [examples][2] folder.
+
+## Documentation
+
+The online documentation is available [here][3].
+
+Building the documentation is done by using [Doxygen][5] :
+
+    cd <BSFL repository>/doc
+    doxygen Doxyfile
+
 ## Dependencies
 
 BSFL is implemented for bash version 4. Prior versions of bash will fail at interpreting its code.
@@ -40,18 +55,21 @@ In addition, BSFL depends of some external programs. Here is the list of these p
 
 However, we try to get as much as possible a standalone library. Hence, some of these external dependencies will be removed in the future.
 
-## What's next ?
+## Unit tests
 
-The best way to learn how does BSFL work is to look at the examples available in the [examples][2] folder.
+BSFL uses [Bats][4] testing framework to verify the correct behaviour of its functions.
 
-## Documentation
+To run all the tests :
 
-The documentation is available online [here][3].
+    bats <BSFL repository>/test
 
-Building the documentation is done by using Doxygen :
+Or, to run only the tests of a specific group :
 
-    cd <path to BSFL repository>/doc
-    doxygen Doxyfile
+    bats <BSFL repository>/test/<test file>
+
+For example, for the network group :
+
+    bats <BSFL repository>/test/network.bats
 
 ## Get involved !
 
@@ -64,3 +82,5 @@ This project is still under development. Contributions are welcomed.
  [1]: http://opensource.org/licenses/BSD-3-Clause
  [2]: https://github.com/SkypLabs/bsfl/tree/master/examples
  [3]: http://skyplabs.github.io/bsfl
+ [4]: https://github.com/sstephenson/bats
+ [5]: http://doxygen.org/