Updated the Readme file to reflect 2.0.1 files

Hi,
I updated the Readme.md file to reflect the changes to the gem v 2.0.1
* Removed outdated instructions and links that referred to .sass file and compiled css files. These were removed in v 2.0.1
* Updated instruction to use scss style `@import "meyer-reset";`

I am also getting an error in when I use the gem. I file an issue on your repo with details.

Thanks,
Mark