This is my test string

`'Please disregard this.\r\n\r\n**Jonathan O\'Donnell: Estimated Time: 10 Hours.**\r\n\r\n**Jonathan O\'Donnell: 2 Hours May 15, 2015**\r\n**Chris Kuhar: 4 Hours May 30, 2015**'`

and this is my **Javascript** regex so far.

`/(\*\*.*?\*\*)/`

It matches the first occurrence perfectly but I want all occurrences.