issue #126 - add SampleAI for c++
Change the timing of starting turns.
Remove debug code. Close #143
Change timing to increment the turn number.
Fix tests to deal with timing change of incrementing the turn number
Update Rulebook.md
Merge pull request #150 from AI-comp/126_cpp_sample

issue #126 - add SampleAI for c++
modify rulebook and add large field_axis.png
Merge pull request #163 from AI-comp/replacefieldaxis

modify rulebook and add large field_axis.png
Merge pull request #148 from AI-comp/143_start_turn

Change the timing of starting turns.
Merge branch 'master' into user_mode

Conflicts:
	Rulebook.md
	src/main/scala/net/aicomp/scene/MainScene.scala
	src/test/scala/net/aicomp/scene/TestScene.scala