Make one of the examples use statgrab_drop_privileges.
Add statgrab_init() call to the examples. If people are going to copy them I guess we should try and make them correct :-) Also tidied up whitespace in the examples.
Fix getopt() return value.
Tidy up of lots of little things. :)
Example of how to get and display cpu usage.
Added basic docs for network stats, and a example. Needs some basic work, and no doubt several typos :)
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