Some code restructuration to allow devs to easy customize parsers or add new ones without import / define things in their settings
add documentation for changes about parsers
correction of the example in the doc
use profile.get_display_name when we quote someone.
Merge pull request #145 from webu/bugfixes/quoted_username

use profile.get_display_name when we quote someone.
Merge branch 'master' into easy_custom_parser
Merge branch 'master' of https://github.com/hovel/pybbm into easy_custom_parser