Sandra/Sandra.Snow — pull request #130 by sgrassie (2014-10-26 22:38:20+00:00)
Title: Allow ignorables to be configured in snow.config

I wanted more control over ignoring certain files and folders in my blog repo, e.g. the readme.md. I didn't much like the recommended way of specifying a directory to copy stuff into the root from, and that also seemed a little unwieldy to me, as opposed to being able to explicitly specify in a config file "don't this delete this file, man".

### I have
Removed all hard coded ignore strings from IoExtensions.cs, in favour of allowing a user configurable section of snow.config to be the source of ignores.

- Removed static hard coded string arrays
- Added a func factory to Empty() which defaults to null.
- Extended snow settings with ignorables property.

## Still to do
- [ ] Update sample snow.config in 'snowsite'
- [ ] Update wiki with new documentation

## Example snow.config
```
# somewhere in snow.config
"ignorables": [
"cname",
"compile.snow.bat",
"snow.config",
".nojekyll",
".gitignore",
".deployment",
".git",
".svn",
"svn",
"snow",
"readme.md"
]

```