Merge pull request #15 from greenTara/master

fixes Issue #14 re start pattern
Merge pull request #22 from greenTara/master

Partial resolution of issues #16 and #21
Example temporal test suite testing the schema for time, interval, and algebra definitions
fixed content model for interval algebra operators
added missing interval primitive content model
different content models for interval terms and interval formula with additional interval relations
Setup of the directory structure for test suites as discussed in Issue #21

Signed-off-by: greenTara <taraathan@gmail.com>