Specta.podspec: update description s/OCUnit/XCTest
Specta.podspec: update description s/OCUnit/XCTest

flovilmart/specta,wessmith/specta,ShawnLeee/specta,ExtremeMan/specta,ashfurrow/specta,PatrykKaczmarek/specta,jmoody/specta,Lightricks/specta,segiddins/specta,Vungle/specta,mickeyreiss/specta,alvinvarghese/specta,iosdev-republicofapps/specta,hanangellove/specta,Taptera/specta,specta/specta,adamkaplan/specta,dbarden/specta,lmtim/specta,ernestopino/specta,rad3ks/specta,iguchunhui/specta