message: Add description about new easymoiton motions
diff: @@ -402,8 +402,12 @@ Motion Command | Description
  `<leader><leader> j`|Start of line forwards
  `<leader><leader> k`|Start of line backwards
  `<leader><leader> / <char>... <CR>`|Search n-character
  +`<leader><leader><leader> bdt`|Til character
  +`<leader><leader><leader> bdw`|Start of word
  +`<leader><leader><leader> bde`|End of word
  +`<leader><leader><leader> bdjk`|Start of line
  -`<leader><leader> (2s|2f|2F|2t|2T) <char><char>` are also available.
  +`<leader><leader> (2s|2f|2F|2t|2T) <char><char>` and `<leader><leader><leader> bd2t <char>char>` are also available.
  The difference is character count required for search.
  For example, `<leader><leader> 2s <char><char>` requires two characters, and search by two characters.
  This mapping is not a standard mapping, so it is recommended to use your custom mapping.
  