corrected minerva makefile
added sample refinement image to git repository
Corrected conflict

Merge branch 'Iterative-Solution' of https://github.com/RudoRoemer/Felix into Iterative-Solution

Conflicts:
	src/makefile-minerva.GF
Added function to ouput a sample input file if an input fails to open
merging Iterative solution to modified master

Merge branch 'master' of https://github.com/RudoRoemer/Felix into Iterative-Solution

Conflicts:
	src/makefile-minerva.GF
Merge pull request #15 from RudoRoemer/Iterative-Solution

Iterative solution