Added glymur requirement.
Added glymur retrieval.  No need to use wget to retrieve openjpeg src.
Added glymur support.

No need for MissingOpenJPEGBinaryException, get_data, or read_xmlbox
anymore, glymur handles it.
Updated for glymur support.
filename should have been filepath
No need to retrieve openjpeg distribution with glymur support.
Restoring 1.5 tarball install of openjpeg, it works just fine with glymur.
Try without PIP_WHEEL_COMMAND
Restore PIP_WHEEL_COMMAND to glymur install command, be consistent.
glymur install requirement should minimally be 0.5.5
Merge remote-tracking branch 'upstream/master' into glymur2

Conflicts:
	sunpy/io/jp2.py
Merge pull request #2 from Cadair/glymur2

Glymur2
Merge pull request #588 from quintusdias/glymur2

Glymur2