adding screenshots to readme
Merge pull request #22 from nkammah/doc_tour

adding screenshots to readme
Allow severity levels to be configured
Merge pull request #23 from nkammah/configurable_severity_levels

Allow severity levels to be configured
fixing typos that were preventing status time from being saved
BREAKING SCHEMA CHANGE : removing references to etsy status time

rename etsystatustime into statustime (including in DB which will break currently up and running installations)

migration change - run the following query:
alter table postmortems change etsystatustime statustime int(11) UNSIGNED NOT NULL;
Adding migration file - run it with:
mysql -p -u morgue -h localhost morgue < schemas/migrations/rename_statustime_column.sql
Updating README with migration instructions for statustime changes
updating doc in Persistence class
Merge remote-tracking branch 'upstream/master'