Revert "Removed -k from curl that I was using from testing, and "cached:" as it"

This reverts commit 612606672c380e20217010efbee79d5ee42e7a56.
Revert "Added an error message with exit if CURL failed to cache a file (eg: SSL"

This reverts commit 3fb462813f58825db31f5b9ecfaebb01a3579fb6.