change downloads language
downloads -> zip downloads on button for clarity
change js behavior
such that button is default shown for closing rather than vice-versa
explanatory comment in js file
updated language for clarity
Fix issues 1 and 2 re: button
Merge pull request #18 from aerenchyma/project_2-0-1

Changes for feature 2.0.1, see resolved issue #1 and #2 on oerbit_analytics