Installation instructions and removed breaking require

Added installation instructions to get this theme going

Removed require to unknown file from sorcery (validation) as it does not exist. Commented line remains in tact.

Added some harmony specific Blade templating defaults e.g.

```
@harmonyPosts

    @harmonyRender('template')

@harmonyEndPosts
```

will create a wordpress loop with standard posts etc. Render a harmony template in any other templating language and then end the loop.