Open files from outside Xcode

[0xced]

The xed command line tool is supposed to provide this feature but is unfortunately terribly broken (the radar still holds true as of Xcode 7.3.1).

This pull request adds the equivalent to xed [--line lineno] file with distributed notifications.

• Example from Objective-C (with line number):

[[NSDistributedNotificationCenter defaultCenter]
    postNotificationName:@"pl.pixle.KZLinkedConsole.OpenFile"
                  object:@"JRSwizzle.m"
                userInfo:@{ @"Line": @105 }
      deliverImmediately:YES];

• Example from a terminal (without line number):

/usr/bin/python -c "from Foundation import NSDistributedNotificationCenter; NSDistributedNotificationCenter.defaultCenter().postNotificationName_object_userInfo_deliverImmediately_('pl.pixle.KZLinkedConsole.OpenFile', 'JRSwizzle.m', None, True)"

[krzysztofzablocki]

awesome work! 👍