Tweak upgrade steps

I took a stab at tweaking the upgrade steps a bit. See:
![screen shot 2014-11-15 at 15 41 52](https://cloud.githubusercontent.com/assets/162976/5056973/2c25023e-6cdf-11e4-99d8-2e00383129aa.png)
![screen shot 2014-11-15 at 15 41 57](https://cloud.githubusercontent.com/assets/162976/5056974/2cea36b2-6cdf-11e4-8fbf-e78ce38702e2.png)

The sentence "Install transpec, this will save you a heap of time" reads to me like a run-on-sentence.  I was always taught in school that this is a big-no-no (at least for formal writing), although I've noticed them more than a couple times in stuff you've written, @JonRowe :).  I think our docs and site will read better without them.  Maybe this could be "Install transpec, as it will save you a heap of time."?