Move snapshot code to package

src/tokenized-buffer.coffee

@@ -322,9 +322,3 @@ class TokenizedBuffer
     for row in [start..end]
       line = @lineForScreenRow(row).text
       console.log row, line, line.length
-
-  getDebugSnapshot: ->
-    lines = ["Tokenized Buffer:"]
-    for screenLine, row in @linesForScreenRows(0, @getLastRow())
-      lines.push "#{row}: #{screenLine.text}"
-    lines.join('\n')