Attempting to remove errors

html5boilerplate.html
html5reset.css
Attempting to revert pre-error
GitIgnore Update
Changed Tagline
Undo Tagline revision

This reverts commit be5c87924a7a1f31a81de0919dac0d56c313b105.
Post-grade changes
Post Validation corrections
Post grade, post assessment changes
Week One Compliance confirmation changes
Commencement of Week 2 assignment

Structured CSS formatting.
Pre Validation, Pre Submission Version Week 2
Post Validation Corrections

Corrected A HREF ID for joinbutton.