Move all md files but README to doc/md
Merge pull request #1786 from iglesias/markdown

Move all md files but README to doc/md
add markdown syntax to license
Hot fix in boolean expression in SNPStringKernel
Updating revision of data submodule.
Merge pull request #1789 from tklein23/develop

Updating revision of data submodule.
Merge pull request #1788 from iglesias/develop

Hot fix in boolean expression in SNPStringKernel
Update data submodule
Merge pull request #1791 from iglesias/develop

Update data submodule