update README.md and pom
improved error messages, added trim() for reading props
update hsqldb
added a method in DBProxy to query a list of any column type matching a certain column name.
typo fix
license format
added .travis.yml
updated .travis.yml
pom tweaks
added travis buttons [ci skip]
readme tweak [ci skip]
update version in pom [ci skip]
updated donate address [ci skip]
updated LICENSE [ci skip]
updated license header [ci skip]
version updates
[maven-release-plugin] prepare release yank-2.1.0
[maven-release-plugin] prepare for next development iteration
Merge branch 'develop'

Conflicts:
	.travis.yml