sublime-keymap.json

// install the run_multiple_commands plugin from https://gist.github.com/nilium/3327730
[
  {"keys": ["ctrl+="], "command": "insert", "args": {"characters": " => "}},
  {"keys": ["ctrl+p"], "command": "insert_snippet", "args": {"contents": "params[:$0]"}},
  {"keys": ["ctrl+;"], "command": "run_multiple", "args": {"commands": [
    { "command": "move_to", "args": {"to": "eol"} },
    { "command": "insert", "args": {"characters": ";"} }
  ]}},
  {"keys": ["super+shift+v"], "command": "paste" },
  {"keys": ["super+v"], "command": "paste_and_indent"},
  {"keys": ["ctrl+shift+,"], "command": "insert_snippet", "args": {"contents": "<%= $0 %>"}},
  {"keys": ["ctrl+enter"], "command": "insert_snippet", "args": {"contents": "<br />"}},
  {"keys": ["ctrl+shift+tab"], "command": "mark_and_move_window_select"},
  {"keys": ["ctrl+tab"], "command": "mark_and_move_window_toggle"},
  {"keys": ["ctrl+m"], "command": "mark_and_move_do_it_all"},
  {"keys": ["alt+m"], "command": "mark_and_move_next"},
  {"keys": ["alt+shift+m"], "command": "mark_and_move_prev"},
  {"keys": ["ctrl+shift+m"], "command": "mark_and_move_recall"},
  {"keys": ["ctrl+alt+m"], "command": "mark_and_move_clear"},
  {"keys": ["ctrl+shift+'"], "command": "change_quotes"}
]