Set property in constructor closes #75.
Added to_text() test
Lots of additions for to_text()
Lots of to_text() changes
updated scripts to largely use new to_text() func
Remove duplicate code. Fix #78
removed a big block of commented code
Lower required dependency versions.

This matches what is available on RHEL 6.5.

Fix #72.
Add tox environment with explicit RHEL dependencies.

Also configure travis to let tox handle the environments for testing.
Fixed some bugs and updated tests
Fixes, updates, etc
Replaced \r\n with \n
removed bug
Cleaned up default path
Modified printy stuff
Updated scripts to use STIX 1.1.1 and some other changes
Fixed URL
Corrected incl/excl in PollResp.to_text()
Added constants for status details. Closes #81.
Updated to use SD constants. Closes #83.