added markdown dependence as sub-module

Signed-off-by: AdamHjerpe <Adam.Hjerpe@hotmail.com>
Merge branch 'Development' of https://github.com/AdamHjerpe/Blog into Sub-modules-for-dependencies

Signed-off-by: AdamHjerpe <Adam.Hjerpe@hotmail.com>

Conflicts:
	.gitmodules
Merge into master

Signed-off-by: AdamHjerpe <Adam.Hjerpe@hotmail.com>