Enhanced plugin documentation (Added <P_PluginName_ConfInfo>)

* Added documentation for new function <P_PluginName_ConfInfo>
* Added list of all supported functions to starting chapter
* Fixed minor errors
Enhanced plugin documentation (Added <P_PluginName_ConfInfo>)
Merge branch 'feature/#1-Enhanced_Plugin_docu' into develop
[PR] Node 0.40 - 0.2

Updated internal version
Merge branch 'release/0.40.-0.2'