Change doc inserting method.

Change from the private IDE method way to keyboard events listening, to solve the undo/redo bug

Signed-off-by: onevcat <onevcat@gmail.com>
Make code clean and add some memo

Signed-off-by: onevcat <onevcat@gmail.com>
Remove the DVTKit dependence because not using private method.

Signed-off-by: onevcat <onevcat@gmail.com>
Fix issue #8, inline block params

Change regex for block. See more https://github.com/onevcat/VVDocumenter-Xcode/issues/8

Signed-off-by: onevcat <onevcat@gmail.com>