[Bro] updated summary of Bro User Survey results

[Brian Tierney]

Got a few more replies. Here is the updated list.


- Using Bro as the primary production network IDS for your site/group
	4  (LBL, NERSC, ESNet, NCSA, UC Davis, 1 small business net)
- Using Bro as the secondary production network IDS for your site/group
	4
- Using Bro for off-line analysis for forensics, etc.
	2
- Using Bro for traffic characterization studies only
	2
- just playing around with Bro.
	1
- currently just playing around with Bro, but hoping to use it in  
production soon
         5

Other replies:
   - using Bro as part of a NIDS product
   - using Bro for research purposes