Converted plugin structure from Media Wiki to Dokuwiki.
Added action plugin to open and filter .usfm.txt files.
Ported most of the usfm to html functionalities.
Added more porting notes in README.md
Added plugin.info.txt which is need for a valid Dokuwiki plugin
Corrected tag case sensitive problem, ported addition command 'i','it','d','r','t','tl','x'
Merge pull request #1 from yvonnel098/master

USFMTag import, providing dokuwiki functionality