Convert manual.pdf to markdown

[mbruchert]

pdf is really ugly in a git repository because one can neither diff / review the changes in nor modify it further.

Please "squash and merge" this (in case you merge it) so this is only one commit after merging)!

[orwell96]

Please change the file name to something different, like MANUAL.md else it confuses because there is aleady a readme.txt

[gpcf]

Also, isn't there a TeX source file for the manual? The manual looks TeXed.

[orwell96]

Lyx,actually i thought it was somewhere in the assets folder

[codexp]

I am wondering why all the mintest repos use these strange text readmes. Markdown looks so much nicer. PDF's are also very inconvenient. So would be nice if this is going to be merged sometime.

Is there a reason why they are in those Wiki like text formats?