Merge pull request #131 from CBarraford/master

removed license str from netscalersnmp collector
Add in some more documentation and remove some personal options that are overridden in netscalersnmp.py
Set the full include path before importing modules. This fixes out of order import issues we previously had
netscalersnmp.py should import SNMPCollector from snmp, not SNMPCollector
Handle snmp overrides correctly
Doc updates
Change the formatting for the doc template. Also add in a replacable token for the new automagic example code via unit testing
If passed in example metrics, write it over the token in the docs file
Updates to sort the example metrics and more file protections
Add in example metric extraction to the unit tests
Clean up the setDocExample code
Only mock the one wire open builtin vs the global one
Doc Updates
Doc update
Unit test memcached
Docs update
Add unit testing to the xen collector
remove mutable argument:
when a mutable value as list or dictionary is in a default value for an argument. Default argument values are evaluated only once at function definition time, which means that modifying the default value of the argument will affect all subsequent calls of the function.
don't mix \t and spaces
be specific in the except