Update code examples to use new library version

https://github.com/kissmetrics/py-KISSmetrics
Merge pull request #67 from willrust/gh-pages

Updates Android SDK doc to include 'record()' on condition
Custom churn calculation has been addressed
Merge pull request #58 from marksteve/patch-2

Update code examples to use new library version
Link to py-KISSmetrics repo
Revising new Python library code examples