adding manual build
Made sure all files are included in docs. Note that the latest snapshot of doctools is needed. There's still problems with icluding code snippets.
adding self-building manual
added missing test dependency to Google GSON
make travis test against JDK7 (openjdk7 and oraclejdk7)
Added travis-ci status image
java version
updating docs
wrong link
Merge branch 'master' of github.com:neo4j/spatial

Conflicts:
	pom.xml