Updates to README

What's Changed

• Reorg folder structure by @patrickvecchio in #6
• Removed inline html from readme to match non-HTML friendly places (like NuGet.org) by @patrickvecchio in #18
• spelling and grammar checked by @patrickvecchio in #19

Full Changelog: https://github.com/patrickvecchio/CustomConfigurationProviders/commits/v1.0.1

v1.0.0 - Initial Buildout

This release provides the functionality described in the README