add deleted column back to tags table
add basic travis.yml
it's php
add travis-ci status to README
Add a note on using PHP built-in server

If someone wants to quickly preview what Morgue does without having to configure apache the built-in web server does the job.
Merge pull request #14 from arnaudlimbourg/patch-1

Add a note on using PHP built-in server for development/playing with
rename the morgue schema file to postmortems

Renaming this file to reflect the tables that are created is more
in line with the other schema files, as well as allows for using
the filename to determine if the schema should be executed or not.
update documentation for schema filename change