add cpath in reader.lua
add activity indicator when configuring in reflow mode
For now pillow activityIndicator is used to draw animated waiting icon
at the upper left corner of the screen. So pillow service should be
enabled to use this feature, but eventually we should implement an
activity indicator that is independent of native system.
Merge pull request #82 from chrox/activity_indicator

add activity indicator when configuring in reflow mode