Vendor golang dependencies w/ glide

https://glide.sh/

Pins dependencies, so that the entire project doesn't mysteriously
break when built on a different machine. Glide was picked for having
a large community, and its claim that the official vendoring tool -
developed by the golang maintainers - resembles the ideals of glide.
Brief research backs this up: https://github.com/golang/dep

Glide does have an issue with caching, which can make updating
difficult.
Ref: Masterminds/glide#592

Basically, if you're looking to update dependencies to later
versions, first run `glide clear-cache`, then `glide update`.

glide.yaml

@@ -0,0 +1,23 @@
+package: github.com/pereztr5/cyboard
+license: BSD-3
+owners:
+- name: Tony Perez
+- name: Tyler Butters
+import:
+- package: github.com/Sirupsen/logrus
+- package: github.com/fsnotify/fsnotify
+- package: github.com/gorilla/mux
+- package: github.com/gorilla/securecookie
+- package: github.com/gorilla/sessions
+- package: github.com/gorilla/websocket
+- package: github.com/meatballhat/negroni-logrus
+- package: github.com/spf13/cobra
+- package: github.com/spf13/viper
+- package: github.com/urfave/negroni
+- package: golang.org/x/crypto
+  subpackages:
+  - bcrypt
+- package: gopkg.in/mgo.v2
+  subpackages:
+  - bson
+- package: gopkg.in/natefinch/lumberjack.v2