Update docs and makefile

Makefile

@@ -3,18 +3,37 @@
 VERSION = $(shell git describe --tags --abbrev=0)
 HASH = $(shell git rev-parse --short HEAD)
 
-build: tcell
+# Builds micro after checking dependencies but without updating the runtime
+build: deps tcell
 	go build -ldflags "-X main.Version=$(VERSION) -X main.CommitHash=$(HASH) -X 'main.CompileDate=$(shell date -u '+%B %d, %Y')'" -o micro ./cmd/micro
 
+# Builds micro after building the runtiem and checking dependencies
+build-all: runtime build
+
+# Builds micro without checking for dependencies
+build-quick:
+	go build -ldflags "-X main.Version=$(VERSION) -X main.CommitHash=$(HASH) -X 'main.CompileDate=$(shell date -u '+%B %d, %Y')'" -o micro ./cmd/micro
+
+# Same as 'build' but installs to $GOPATH/bin afterward
 install: build
 	mv micro $(GOPATH)/bin
 
+# Same as 'build-all' but installs to $GOPATH/bin afterward
+install-all: runtime install
+
+# Same as 'build-quick' but installs to $GOPATH/bin afterward
+install-quick: build-quick
+	mv micro $(GOPATH)/bin
+
+# Updates tcell
 tcell:
 	git -C $(GOPATH)/src/github.com/zyedidia/tcell pull
 
+# Checks for dependencies
 deps:
 	go get -d ./cmd/micro
 
+# Builds the runtime
 runtime:
 	go get -u github.com/jteeuwen/go-bindata/...
 	$(GOPATH)/bin/go-bindata -nometadata -o runtime.go runtime/...