added documentation on how to enable the loading indicator
Revert "added documentation on how to enable the loading indicator"

This reverts commit 049dd8462a97d3896d659c55c3e9232450549a94.
Revert "Revert "added documentation on how to enable the loading indicator""

This reverts commit 2c263f4e346fb1243e53727f471e0b45b1e48bd2.
Merge pull request #9 from steffenrosi/acs-aem-commons-1.7.0

Added documentation for ajax loading indicator