rubocop style fix: remove then on multiline if
rubocop style fix: shorthand += and chained blocks
style fix and doc string improvement
refactor IP check in asn1 module
nil comparison fixes
remove pointless nil checks
remove most nots in favor of !
replace all remaining and or with && ||
reorg rubocop yaml
Merge pull request #87 from reaperhulk/final-style

Final style work