Add Makefile and test target
Merge pull request #4 from rranelli/tests-with-makefile

Before merging, Makefile code specific for maven-test-mode was removed.
Don't believe org-up-heading-safe (yet)

In Org mode 8.2.10 (built-in version with Emacs 24.4), this function
will still throw an error if it is before the first heading. This was
fixed in Org mode commit 9ba9f916e87297d863c197cb87199adbb39da894.