First split into crockery init and crockery run

The init command creates a crockery.db file containing the domain name and
TLS keypair. The run command starts IMAP and SMTP services based on that file.

Supporting only a single domain is starting to look a bit unnecessary. We'll
see how that goes.

Gopkg.lock

@@ -1,6 +1,25 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
 
+[[projects]]
+  name = "github.com/asdine/storm"
+  packages = [
+    ".",
+    "codec",
+    "codec/json",
+    "index",
+    "internal",
+    "q"
+  ]
+  revision = "68fc73b635f890fe7ba2f3b15ce80c85b28a744f"
+  version = "v2.0.2"
+
+[[projects]]
+  name = "github.com/coreos/bbolt"
+  packages = ["."]
+  revision = "583e8937c61f1af6513608ccc75c97b6abdf4ff9"
+  version = "v1.3.0"
+
 [[projects]]
   name = "github.com/emersion/go-imap"
   packages = [
@@ -26,6 +45,12 @@
   packages = ["."]
   revision = "a63104657743890cb7c2fd54f15a2725291f6a9f"
 
+[[projects]]
+  branch = "master"
+  name = "golang.org/x/sys"
+  packages = ["unix"]
+  revision = "dd2ff4accc098aceecb86b36eaa7829b2a17b1c9"
+
 [[projects]]
   name = "golang.org/x/text"
   packages = [
@@ -38,9 +63,15 @@
   revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
   version = "v0.3.0"
 
+[[projects]]
+  name = "gopkg.in/urfave/cli.v1"
+  packages = ["."]
+  revision = "cfb38830724cc34fedffe9a2a29fb54fa9169cd1"
+  version = "v1.20.0"
+
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "a8a093c114e9fd6d1de5e43c061f3cf1d08fa5279da70af9c0cd030030fe7737"
+  inputs-digest = "5b164a447403365e9da1c9b7f1a085a9442ff1afd241346f5d4b5c25c62bdac2"
   solver-name = "gps-cdcl"
   solver-version = 1