Add .travis.yml file
Replace tab indentation from travis.yml file

Error description:
```
ERROR: An error occured while trying to parse your .travis.yml file.
Please make sure that the file is valid YAML.
The error was "found character 	 '\t(TAB)' that cannot start any token.
(Do not use \t(TAB) for indentation) while scanning for the next token
at line 5 column 1".
```
Add Travis build status to README
Add tomcat7-maven-plugin version to pom.xml
Add MySQL provision in travis.yml
Use blank password to connect to travis MySQL database
Specify build script to use in travis.yml
Test using before_install rather than before_script in travis.yml
Run MySQL without password in travis.yml
Override travis.yml script to run test suite
Merge pull request #190 from jembi/develop

Merge Travis-CI integration into master branch