Updated README.md
Minor changes and refactorings.
Place an empty brush at the origin and move the camera so that
the user will see it when a new map is created.
Better camera placement on map load.
Adapted Linux project to changes.
Merge branch 'Release_1.0.0'

Signed-off-by: Kristian Duske <kristian.duske@gmail.com>

Conflicts:
	Mac/TrenchBroom/TrenchBroom-Info.plist
	Windows/TrenchBroom/BuildNo
	Windows/TrenchBroom/TrenchBroom.vcxproj.filters
Fix a bug in Animation class when removing the last animation in the animation list.

Signed-off-by: Kristian Duske <kristian.duske@gmail.com>