Add a version.html help page.

NEWS should be reformatted as asciidoc or something more simply
transformed into clean asciidoc.

vimperator/locale/en-US/asciidoc.conf

@@ -75,7 +75,7 @@ argument2=<span class="argument">&\#123;|&#125;</span>
 argument3=<span class="argument">[|]</span>
 
 [specialwords]
-warningwords=WARNING: Warning:
+warningwords=WARNING: Warning: IMPORTANT: Important:
 infowords=NOTE: Note:
 
 [warningwords]