Beta-Commit: Added task that compiles to formats like PDF, etc. works
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The task `md2pdf` now works on Linux. Only a small problem remains: Pandoc not
writing to *stdout* when compiling to formats like PDF, odt, etc. is displayed
as an `Error`, which can be confusing.

**Note**: As this commit message is being written, the task `md2pdf` will not work on Windows when TexLive is used a the LaTeX-environment. According to reports, using MikTex instead does work. The problem probably is due to an incompatibility between Pandoc and TexLive which will be resolved ([on Github Issue Tracker](https://github.com/jgm/pandoc/issues/1151)).