Blog about adding purchase tracking tags to the java library

Blog about adding purchase tracking tags to the java library
Merge branch 'master' into purhase_tracking_java_client
Update blog

Update blog
Upate documentation

Update documentation
Adding author to blog

Adding author to blog
Fix spelling

Fix spelling
Update the highlight to html instead of javascript

Update the highlight to html instead of javascript
Merge branch 'master' into purhase_tracking_java_client
Merge branch 'master' into purhase_tracking_java_client
Merge branch 'master' into purhase_tracking_java_client
Fix spacing
Merge pull request #4 from reevoo/purhase_tracking_java_client

Purhase tracking java client