Small textual changes.
Small textual changes.

- used parameter (instead of paramater) in the "Complete plugin configuration" section.
- used Travis CI (instead of Travis or Travis-CI) everywhere.
andrioli/coveralls-maven-plugin,psiniemi/coveralls-maven-plugin,velo/coveralls-maven-plugin,trautonen/coveralls-maven-plugin,velo/coveralls-maven-plugin,manish-hike/coveralls-maven-plugin,velo/coveralls-maven-plugin,psiniemi/coveralls-maven-plugin,andrioli/coveralls-maven-plugin,manish-hike/coveralls-maven-plugin,trautonen/coveralls-maven-plugin,manish-hike/coveralls-maven-plugin,trautonen/coveralls-maven-plugin,andrioli/coveralls-maven-plugin,psiniemi/coveralls-maven-plugin