Added a document for YAESS skipFlow (#142, #155).
Added a document for YAESS skipFlow (#142, #155).

akirakw/asakusafw,asakusafw/asakusafw,asakusafw/asakusafw,akirakw/asakusafw,cocoatomo/asakusafw,ashigeru/asakusafw,ashigeru/asakusafw,cocoatomo/asakusafw