add command to retrieve processing plugins; sudo template change; release notes update

RELEASE_NOTES.txt

+Release 0.9 (02/25/2016)
+=============================
+
+- Developed directory processing mode for uploads; in this mode file transfer 
+  plugins transfer entire directories as opposed to individual files
+- Added dm-get-processing-plugins command
+- Resolved working directory issue that may occur with simutaneous uploads
+
 Release 0.8 (01/26/2016)
 =============================