all user switching for admins.
better command display.
Rewrote README.md to be specific to the symftest app.
Updated README.md.
Updated README.md.
Merge branch 'master' of https://github.com/mjordan/symftest

By Mark Jordan
* 'master' of https://github.com/mjordan/symftest:
  Updated README.md.
  Updated README.md.
  Rewrote README.md to be specific to the symftest app.
Added mention of the intl extension and PHPUnit for running tests.