Tree for the repo and empty main.cc.

	 * .gitignore: Updated so it ignores emacs and mac related files.
	 * CMakeLists.txt: Simple CMakeLists.txt.
	 * bin/.gitignore: Add the empty folder bin to the repo.
	 * src/imw2png/main.cc: Empty main...
Add ImwHelper to the repo.

	* src/ImwHelper.cc: New.
	* src/ImwHelper.hh: New.
Simple and working imw2png.

Need to be able to set the parameters (instead of mu + 3 sigma).

	 * src/imw2png/main.cc: Wrote program here.
imw2png is now able to take the input filename with or without .imw ext.

		* src/imw2png/main.cc: Here.
Now takes a parameter n for mapping values from [0; mu + n * sigma].

	* src/imw2png/main.cc: Here.
Adde the possibility to not pass an output name.

	 In this case, the input name (with the extension removed) is used and the
	 image is stored as input.png.

	 * src/imw2png/main.cc: Here.