added support of "what is <key>" command which is similar to "remember <key" since more and more people I see refere to what is over remember, it seems more natural for them so why hot having two
adding multiline support for memories by replacing `.` with `[\S\s]` matching group to match new lines, since `.` doesnt match new lines in JavaScripts implementation of RegEx
Merge pull request #1404 from Restuta/master

added support of "what is <key>" command which is similar to "remember <key"