Add some more notes about using the IDE on Windows

[mhammond]

I made some notes when installing and trying to use IntelliJ which I've captured here.

---

This change is

[mozilla-autolander-deprecated]

Autolander could not find a bug number in your pull request title. All pull requests should be in the format of: Bug [number] - [description].

[codecov-io]

Current coverage is 58.29% (diff: 100%)

Merging #137 into master will not change coverage

@@             master       #137   diff @@
==========================================
  Files            23         23          
  Lines          1976       1976          
  Methods        1837       1837          
  Messages          0          0          
  Branches         95         95          
==========================================
  Hits           1152       1152          
  Misses          824        824          
  Partials          0          0          

Powered by Codecov. Last update fbc5e28...9373306

[Dexterp37]

Drive-by: @mhammond, maybe you should integrate this at the end of the README? I've added a Windows issues a while back that reports some of the things you've added.

[mhammond]

maybe you should integrate this at the end of the README?

I prefer having the windows notes on the IDE close to the other notes about the IDE - the other Windows notes also seem relevant to the immediate section above it. I'm happy to move it if that's really wanted though (or have it re-jigged in-place as part of merging it :)

[Dexterp37]

Yeah, I mean, I don't particularly care I'm just saying that the two sections should probably be merged (as they suggest the same solutions!)