This commit continues the work started by @sp4ke, in createing
a simple Makefile for lnd. The following commands are included:
* make - builds everything (deps, lnd, and lncli) from scratch
* make deps - installs dep if needed, then runs dep ensure
* make install - builds lnd and lncli
* make check - runs unit and itests
* make unit - runs the unit tests for all packages
* make itest - installs lnd and runs integration tests
* make fmt - go fmt's all files
Included commands:
- deps: install glide and dependencies
- install: install lnd
- fmt: run `go fmt` excluding vendor
- test: run `go test` as per documentation
