Created an excel file (open document) format to test the heat model.
Merge https://github.com/larics/assisi-playground into heat
Renamed folders where excel heat is.
Reformated code in AbstractGridSimulation
Added some rules to .gitignore
Added playground.cfg
Corrected .gitignore cmake rules
Merge pull request #18 from larics/heat-integration

Heat integration.
Updated messages?
Merge branch 'master' of github.com:larics/assisi-playground
Temporarily removed the test directory, because it seems to be causing build problems on some systems.
Commented out the test directory from CMakeLists.txt
Restored the test folder. It will still not be build, becase it has ben commented out of CMakeLists
Merge branch 'master' of https://github.com/larics/assisi-playground into heat
First implementation of a mesh heat actuator.
Need visualization to test it.
Merge pull request #17 from plsm/heat

Merging Pedro's changes: excel heat model (for evaluating the model), mesh heat actuator. Fixes #26.