Reorder some information on the Simple Chocolatey Package Repository webpage

[bcurran3]

(Lots of new good info added to 0.2.3)

RE: Adding/Pushing Packages

I believe it's more intuitive to show:

To add the package push API key to the client machines you use for packaging, use the following:
choco apikey --source="http://myserver/chocolatey" --api-key={apikey}

before:

Use the command below to push packages to this repository:
choco push [{package file}] --source http://myserver/chocolatey [--api-key={apikey}]

as, if you've set the apikey, you don't need to specify it to push packages (follows a more logical order).