Added options to print WMS tile URLs and layer names only.
Added 'siege' script against geoserver URLs.
Split request types (in case we want to be able to siege on different request types).
Removed "wms only" option (since it's pretty redundant).
More robust bash parameter passing.
Using mktemp to generate temporary filenames.
Now script must be run with first parameter being the geoserver URL.
(no "usage" instructions or option or anything fancy - I think this is sufficient for now).
Merge pull request #4 from aodn/geoserver_siege

Geoserver siege