User specific parameters

[chriskelly]

First step towards enabling others to use the package. Possible implementation would be creating a sub-folder in the data folder that's not synced to Git. This folder would have a params.json that's specific to the user. The original params.json would used as the default and copied when the user first runs.

[chriskelly]

I suppose this isn't actually an issue if this were a distributed package. The actual concern here is for developers to be able to have a config file that doesn't get over-written when another developer syncs with git. Could just put the config file in a folder that doesn't sync and provide a link to download a template config file for anyone new to the project

[chriskelly]

Now each contributor can modify their own params.json without affecting the others. It may delete your current params.json file, but you can copy a template from data/default_params into /data. I've also added an error message that will tell the user this. If someone's ambitious, they could automate this.