add `TERM_PROGRAM` and `TERM_PROGRAM_VERSION` env vars (#350)
add `TERM_PROGRAM` and `TERM_PROGRAM_VERSION` env vars (#350)

* add `TERM_PROGRAM` and `TERM_PROGRAM_VERSION` env vars

MacOS's Terminal.app sets these same env variables.
They're useful to be able to sniff out the type of
terminal emulator and do different settings in your
bashrc / vimrc / etc. configuration files.

So for example, `TERM_PROGRAM` will be "HyperTerm",
and `TERM_PROGRAM_VERSION` will be the value from `package.json/version`.

* fix require package.json path

KunalKene1797/hyper,martinvd/hyper,spncrgr/hyper,MartyGentillon/hyper,wilsontayar/hyper,whitelynx/hyperterm,MartyGentillon/hyper,martinvd/hyper,ekmartin/hyperterm,zeit/hyper,zeit/hyper,zeit/hyper,AlmirKadric/hyperterm,chabou/hyper,rickycodes/hyper,stefanivic/hyper,zeit/hyperterm,mike-engel/hyperterm,reslaurentii/hyper,bekher/hyperterm,ppot/hyper,AlmirKadric/hyperterm,ppot/hyper,mike-engel/hyperterm,reslaurentii/hyper,KunalKene1797/hyper,rickycodes/hyper,zeit/hyper,derrickpelletier/hyper,bekher/hyperterm,whitelynx/hyperterm,chabou/hyper,stefanivic/hyper,zeit/hyperterm,ekmartin/hyperterm,spncrgr/hyper,derrickpelletier/hyper,ppot/hyper,wilsontayar/hyper,chabou/hyper