Major rewrite

* use dep for vendoring
* lets encrypt
* moved web to transfer.sh-web repo
* single command install
* added first tests

vendor/github.com/minio/cli/helpers_unix_test.go

@@ -0,0 +1,9 @@
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package cli
+
+import "os"
+
+func clearenv() {
+	os.Clearenv()
+}