Add system requirements and installing information
Improved formatting in README
Merge pull request #139 from akashivskyy/readme-installing

Add installation guide to README
Fixing missing instancetype on 10.8
Adding documentation for -isEqual and -description
Improving documentation
Improving documentation again
Fixing typos
Fixing TomDoc style
Merge pull request #146 from github/isequal-docs

Adding documentation for -isEqual and -description
Merge pull request #3 from github/master

Sync github/Mantle