add unittests for execute_if_exists and get_executable
add execute_if_exists and get_executable
fix remarks
Merge pull request #51 from stdweird/render

Add CAF::Render to render structured text
Add CAF::FileReader for read-only file accesses

Fixes #53.
Fix documentation and remove unused modules
Fix bugs and tests.
Use seek_begin to rewind the file.
Merge pull request #54 from stdweird/process_extend_api

Process: add get_executable and execute_if_exists
Merge pull request #55 from piojo/reader

Add CAF::FileReader for read-only file accesses
use .service calls with systemctl by default (but allow .target if set
in servicename)
Merge pull request #57 from stdweird/systemd_service_name

Service: use .service name with systemctl by default 

Fixes #52
Merge pull request #56 from stdweird/render_renderable_test

TextRender: cache the rendered text and implement does_render test
add generic pod unittest
fix borken pod, cleanup some comment blocks