Applied the new name "gespinst" in the file structure and made the old ising library an include library. Fixes #35
Changed the namespace name from "Ising" to "Gespinst"
Rearranged the test file structure and changed the makefile to work with the new testfile structure.
Applied the new naming conventions of "gespinst" in the mocasinns tests
Merge branch 'master' of https://github.com/bkrueger/mocasinns