Use crlf when copying on Windows

Fixes xtermjs#737

src/SelectionManager.ts

@@ -7,6 +7,11 @@ import * as Browser from './utils/Browser';
 import { CharMeasure } from './utils/CharMeasure';
 import { CircularList } from './utils/CircularList';
 import { EventEmitter } from './EventEmitter';
+<<<<<<< Updated upstream
+=======
+import * as Mouse from './utils/Mouse';
+import * as Browser from './utils/Browser';
+>>>>>>> Stashed changes
 import { ITerminal } from './Interfaces';
 import { SelectionModel } from './SelectionModel';
 
@@ -233,7 +238,7 @@ export class SelectionManager extends EventEmitter {
  // and joining the array into a multi-line string.
  const formattedResult = result.map(line => {
  return line.replace(ALL_NON_BREAKING_SPACE_REGEX, ' ');
- }).join('\n');
+ }).join(Browser.isMSWindows ? '\r\n' : '\n');
 
  return formattedResult;
  }