Peg sinon version, and update mocha

[paul90]

This should resolve #21

As far as I can see the latest working version of the npm sinon package is 1.7.1. The previous version we used, 1.6.0, also works so that is also an option.

Have also updated the mocha files with copies from the npm mocha package.

[nrn]

Hey, I didn't break it! :) Nice work tracking down the fix.

[paul90]

I know you didn't. A poor use of words on my part in the original post, while I was trying to understand what was going on.

Still, it is nice to have got that one resolved.

Might be worth adding that the following is a list of package versions I have currently, without dependencies

wiki@0.0.3 F:\GitHub\wiki
├── async@0.2.9
├── bouncy@3.2.0
├── coffee-script@1.6.3
├── coffeeify@0.5.1
├── config-chain@1.1.7
├── docco@0.3.0
├── event-stream@3.0.16
├── expect.js@0.2.0
├── express@3.4.0
├── flates@0.0.5
├── glob@3.2.6
├── grunt@0.4.1
├── grunt-browserify@1.1.1
├── grunt-contrib-coffee@0.7.0
├── grunt-contrib-watch@0.4.4
├── hbs@2.3.1
├── JSONStream@0.7.1
├── mkdirp@0.3.5
├── mocha@1.12.1
├── optimist@0.6.0
├── qs@0.6.5
├── redis@0.8.4
├── should@1.2.2
├── sinon@1.7.1
└── underscore@1.5.2