Update MathHelper.h

added random member
Update MathHelper.cpp

defined random function
Update Vector2.h

Changed crossMultiply and dotMultiply to 'Cross' and 'Dot' respectively
Update Vector2.cpp
Merge branch 'develop' into feature/vec2RandomTweaks
Updated Math::random to have a MINX/MAX
Added default precision to Math::random()
Added include for rand()
Merge pull request #71 from liam-middlebrook/feature/vec2RandomTweaks

Feature/vec2 random tweaks
Merge https://github.com/liam-middlebrook/MINX into develop
Merge branch 'master' of https://github.com/liam-middlebrook/MINX into develop

Conflicts:
	include/MINX/Graphics/RenderTarget.h
	src/Graphics/Texture2D.cpp
	src/Input/Axis.cpp
Fixde RenderTarget license
Merge branch 'release/1.0' into develop

Conflicts:
	include/MINX/Graphics/RenderTarget.h
	include/MINX/MathHelper.hpp
	src/Graphics/RenderTarget.cpp
	src/Graphics/RenderTarget.h
	src/Vector2.cpp
Fixed duplicate declaration in MathHelper.cpp