Improve usage documentation with examples

[maaaaz]

Hello @byt3bl33d3r,

I thought it could be handy to document accepted formats and/or example for most of available options.

For instance, it is not obvious which is the correct format for the PtH -H option: for CrackMapExec it is lmhash:nthash (it may varies for other common tools). The colon is important and shouldn't be forgotten even if the user only has a lmhash or nthash. In that case I propose to go:

• from this "-H HASH NTLM hash(es) or file containing NTLM hashes"
• to that "-H HASH NTLM hash(es) or file containing NTLM hashes (-H <lmhash>:<nthash>)"

Same approach for common option such as -k. Cheers

[byt3bl33d3r]

@maaaaz think the format is explicit enough in the wiki, let me know otherwise