Merge pull request #2 from Exa-Networks/master

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enable parser to handle 4byte ASN rfc5668
parse 32 bit asn in files also
show L in 32 bit target communities
formating cleanup
changelog entry
origin support
support 32bit asn in origin:xxx:xxx extended community
add origin to example 32bit config example
Merge pull request #170 from lazy404/4byteCommunity

4byte community
full integration of previous feature