Better validIP Method

Updated the 'validIP' helper method to return True if the IP is actually
valid, unlike the regex version, which returned True even if the IP was
'999.999.999.999'
Also fixed a few spelling errors that I came across.
Merge pull request #1 from alecnunn/master

Better validIP Method
Merge pull request #2 from byt3bl33d3r/master

Fixed hardcoded database name in postgres queries, created enable_proxy module
Updated version number, added CHANGELOG
creddump file parsing fix
remove line
Merge pull request #3 from byt3bl33d3r/master

Added ls() function to smb.py and created a enum_recent_files module
enumeration/host/enum_recent_files by @byt3bl33d3r,
ls() command in smb library by @byt3bl33d3r
increased error checking for few modules
enumeration/host/enum_recent_files now uses ported pylnker code