Fix all accessibility errors
add some sparse instructions to the readme
add changes to the readme
Merge branch 'unusable'
Change placeholder attribute
change placeholder to Developer
adding a css file and a new discussion on alt_text
changing order of examples
Adding new alt text image examples
Merge branch 'usable'

Conflicts:
	forms.html
Adding usable alt text examples

Conflicts:
	forms.html
breaking alt text accessibility so that we can fix it