Merge branch 'master' of https://github.com/paulhession/protocol-docs

Conflicts:
	.gitignore
Minor fixes to language.
Fixed typos
Merge remote-tracking branch 'upstream/master'

Conflicts:
	content/doctypes/OTmessage.md
	content/doctypes/accountLedger.md
Delete OTmessage.md
Asset contract --> Instrument definition contract

Made additional corrections
Merge pull request #150 from paulhession/master

Minor corrections