Summary:
@wez Mentioned this in Issue #239 -- right now when watchman takes too long we recommend you run `watchman` from your terminal which actually expects some arguments, so it prints out the following:
```
[pcottle:~/Desktop/react-native:changeErrorMessage]$ watchman
{
"error": "invalid command (expected an array with some elements!)",
"cli_validated": true,
"version": "3.0.0"
}
```
basically this ends up being more confusing since the command we recommend you run errors out, so lets change it to `watchman version` which at least exists cleanly.
I kept the troubleshooting link as https://facebook.github.io/watchman/docs/troubleshooting.html since it sounds like we will update that with the issue people run into in #239
Closes https://github.com/facebook/react-native/pull/825
Github Author: Peter Cottle <pcottle@fb.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.
