[asciiart.vim] Add ``asciiart`` filetype, change move key to "HJKL"
Merge branch 'master' into asciiart.vim
[asciiart] add "mf" hot key to make a frame
frame is now "togglable", same "mf" hot key
Fix bug: block moving left and right at edge may broken
Move block 'H' now cleans the space on its right-hand-side
Reject move block upper than buffer
Fix bug: move block up breaks many lines
change the implementation of move block 'L'
change move block up/down implementation, fix bugs
Merge branch 'asciiart.vim'
move asciiart.vim out into a plugin