adding a new magic number for JPG compatibility -an artist was using a JPG image from internet. -trying to publish it from Jabuka, it was failing. -IECore.Reader.create using IECore.JPGImageReader.canRead was assuming the file couldn't be read. -the magic number test was returning false because we wasn't using this specific magic number value. -Hence, I add this new magic value. -I runned the test fine.
adding a new magic number for JPG compatibility
-an artist was using a JPG image from internet.
-trying to publish it from Jabuka, it was failing.
-IECore.Reader.create using IECore.JPGImageReader.canRead was assuming the file couldn't be read.
-the magic number test was returning false because we wasn't using this specific magic number value.
-Hence, I add this new magic value.
-I runned the test fine.

goddardl/cortex,hradec/cortex,goddardl/cortex,appleseedhq/cortex,appleseedhq/cortex,hradec/cortex,appleseedhq/cortex,hradec/cortex,goddardl/cortex