Replace `x-pubkey` with `x-identity`.
Update documentation for `x-identity`.
Merge pull request #18 from martindale/master

Add repository to package.json.
update package.json to include repository field
add space
Merge pull request #17 from martindale/identity

Replace `x-pubkey` with `x-identity`.
Merge pull request #19 from gordonwritescode/master

adds repository to package.json