[D-runtime] [dlang/druntime] 6f45e2: Update README shields

[GitHub via D-runtime]

  Branch: refs/heads/master
  Home:   https://github.com/dlang/druntime
  Commit: 6f45e2a9af4f437ff57193036a69a5fc799059f7
      https://github.com/dlang/druntime/commit/6f45e2a9af4f437ff57193036a69a5fc799059f7
  Author: Sebastian Wilzbach <seb at wilzba.ch>
  Date:   2016-08-29 (Mon, 29 Aug 2016)

  Changed paths:
    M README.md

  Log Message:
  -----------
  Update README shields


  Commit: aee373fb541dafce2769792b4430be82ef25bd2b
      https://github.com/dlang/druntime/commit/aee373fb541dafce2769792b4430be82ef25bd2b
  Author: David Nadlinger <code at klickverbot.at>
  Date:   2016-08-29 (Mon, 29 Aug 2016)

  Changed paths:
    M README.md

  Log Message:
  -----------
  Merge pull request #1636 from wilzbach/patch-1

Update README badges


Compare: https://github.com/dlang/druntime/compare/0c912c4bd6ae...aee373fb541d