travis: Add travis link and use bash in script

Author: Qiang Gu

.travis.yml

@@ -4,10 +4,10 @@ sudo: required
 dist: trusty
 
 before_install:
-  - .travis/before_install.sh
+  - bash .travis/before_install.sh
 
 script:
-  - .travis/script.sh
+  - bash .travis/script.sh
 
 matrix:
   include:

README.md

@@ -1,4 +1,7 @@
 # embARC Open Software Platform (OSP)
+
+[ ![Travis CI Status](https://travis-ci.org/foss-for-synopsys-dwc-arc-processors/embarc_osp.svg?branch=master)](https://travis-ci.org/foss-for-synopsys-dwc-arc-processors/embarc_osp)
+
 ## Introduction
 The embARC Open Software Platform (OSP) is a software distribution aimed at facilitating the development of embedded systems based on ARCv2 Processors.