Modify Readme file and setup project for coverity scan

.travis.yml

@@ -19,4 +19,34 @@ script:
   - cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release —DDOUBLE_PRECISION_ENABLED=True -DCOMPILE_TESTS=True ../
   - make && make test
   - cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release —DDOUBLE_PRECISION_ENABLED=False -DCOMPILE_TESTS=True ../
-  - make && make test
+  - make && make test
+
+env:
+  global:
+    # COVERITY_SCAN_TOKEN
+    - secure: "QxALeVR4akx2ZswFAO96ew"
+
+addons:
+  coverity_scan:
+
+    # GitHub project metadata
+    project:
+      name: DanielChappuis/reactphysics3d
+      version: 1.0
+      description: ReactPhysics3D
+
+    # Where email notification of build analysis results will be sent
+    notification_email: chappuis.daniel@gmail.com
+
+    # Commands to prepare for build_command
+    # ** likely specific to your build **
+    #build_command_prepend: ./configure
+
+    # The command that will be added as an argument to "cov-build" to compile your project for analysis,
+    # ** likely specific to your build **
+    build_command: make
+
+    # Pattern to match selecting branches that will run analysis. We recommend leaving this set to 'coverity_scan'.
+    # Take care in resource usage, and consider the build frequency allowances per
+    #   https://scan.coverity.com/faq#frequency
+    branch_pattern: develop

README.md

@@ -1,5 +1,8 @@
 [![Travis Build Status](https://travis-ci.org/DanielChappuis/reactphysics3d.svg?branch=master)](https://travis-ci.org/DanielChappuis/reactphysics3d)
 
+<a href="https://scan.coverity.com/projects/danielchappuis-reactphysics3d">
+  <img alt="Coverity Scan Build Status" src="https://scan.coverity.com/projects/7733/badge.svg"/>
+</a>
 
 ## ReactPhysics3D