changed fragments to .sh extension

fragments/labels/sidekick.txt

@@ -1,8 +0,0 @@
-sidekick)
-    name="Sidekick"
-    type="dmg"
-    downloadURL="https://api.meetsidekick.com/downloads/df/mac"
-    appNewVersion=$( curl -fsIL "${downloadURL}" | grep -i "^location" | awk '{print $2}' | sed -E 's/.*\/.*-x64-([0-9.]*)-.*/\1/g' )
-    expectedTeamID="N975558CUS"
-    #Company="PushPlayLabs Inc."
-    ;;