v1.0.0-b3

Merge pull request #51 from intercom/jo/add-remote-created-at

add remote_created_at to user

v1.0.0-b2

• Add a user-agent string to the default headers
• Set the accept header to be application/json
• Make user the default type for a conversations query (fix for #41)
• Populate exceptions with errors from the response (fix for #37)
• Fix directory names on Linux for composer (fix for #38)

v1.0.0-b1

Initial beta release.