Fixed issue #16 (https://github.com/binwilly/wifi2use/issues/16)
Also added network activity indicator
Removed UIPrerenderedIcon flag
Fixed issue #19 (https://github.com/binwilly/wifi2use/issues/19)
Added an invalid location filter to fix issue #22 (https://github.com/binwilly/wifi2use/issues/22)
Merge branch 'ios' of https://github.com/binwilly/wifi2use into ios