Merge pull request #7 from WalrusCow/master

Capitalize You/Your; use colon instead of semicolon

Merge pull request #4 from wh1t3w0lf21/patch-1

Update Contract.md

Merge pull request sanstream#2 from martinbean/patch-1

Add closing quote to definition

Add clause about work commencement

Demote change in scope section hierarchy

Tidy up address formatting

Neaten up signature area

Add initial contract