Implement check for OP_RETURN
no need for ts argument

removed `ts: 1396288753` from `utxos` since they are redundant.
paypro: account for PEM metadata as per rfc1424.
paypro: add a full PEM parsing function.
paypro: pem parsing - rename variables.
paypro: handle concatenated pems in pem parser.
syntax fix - typeof is not a function, it's  an operator

following the comment of @shesek here: https://github.com/bitpay/bitcore/pull/500/files#r16642032
`typeof(foo)` should be `typeof foo`
root-certs: move function out of root certs file.
paypro: convert root certs to json.
root-certs: ensure JSON parses properly.
Merge pull request #508 from chjj/pem_fix

PEM parsing fix
paypro: fix example server for no-tx argument.
Merge pull request #511 from chjj/fix_paypro_example

paypro: fix example server for no-tx argument.
Merge pull request #490 from viacoin/op_return

Implement check for OP_RETURN
fix parseValue
Merge pull request #517 from maraoz/fix/parseValue

Fix parseValue
add test for uxtos containing dust
Merge pull request #501 from sagivo/patch-3

no need for ts argument
Merge pull request #520 from matiu/test/dust

add test for uxtos containing dust
Merge pull request #509 from sagivo/patch-2

syntax fix - typeof is not a function, it's  an operator