Patch for sphinx 1.1.3, and all testcases passed

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Fix broken rake task in graphics submodule

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Add instructions for initialize of graphics submodule

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>