Changes append to prepend

When adding something to the beginning it is "prepending", not "appending"
Changes urls to use example.com

As per RFC 2606 it is recommended to use example.com for sample urls in specifications.

One example is left using "foo+special@Bar.baz-bar0.com" because it is designed to demonstrate the complexity of email addresses that should be permitted.
Adds missing newlines
Merge pull request #144 from aJanuary/master

Changes urls to use example.com
Merge pull request #143 from aJanuary/patch-1

Changes append to prepend
Removed spurious 'and', reflowed.
Merge branch 'master' into newemphasis

Conflicts:
	spec.txt