Closes #99: glide get can now have a version specified

- previous pinning by default was implemented
- glide get github.com/Masterminds/convert#^1.0.0 is the pattern
- # is the separator between the location and version
diff --git a/cmd/flatten.go b/cmd/flatten.go
index 1df75ec..3866df2 100644
--- a/cmd/flatten.go
+++ b/cmd/flatten.go
@@ -37,6 +37,14 @@
 		return conf, nil
 	}
 	packages := p.Get("packages", []string{}).([]string)
+
+	// When packages are passed around with a #version on the end it needs
+	// to be stripped.
+	for k, v := range packages {
+		parts := strings.Split(v, "#")
+		packages[k] = parts[0]
+	}
+
 	force := p.Get("force", true).(bool)
 	vend, _ := VendorPath(c)
 
diff --git a/cmd/get_imports.go b/cmd/get_imports.go
index 4815175..8831acc 100644
--- a/cmd/get_imports.go
+++ b/cmd/get_imports.go
@@ -55,11 +55,18 @@
 
 	Info("Preparing to install %d package.", len(names))
 
+	cwd, err := VendorPath(c)
+	if err != nil {
+		return nil, err
+	}
+
 	deps := []*cfg.Dependency{}
 	for _, name := range names {
-		cwd, err := VendorPath(c)
-		if err != nil {
-			return nil, err
+		var version string
+		parts := strings.Split(name, "#")
+		if len(parts) > 1 {
+			name = parts[0]
+			version = parts[1]
 		}
 
 		root := util.GetRootFromPackage(name)
@@ -88,6 +95,10 @@
 			Name: root,
 		}
 
+		if version != "" {
+			dep.Reference = version
+		}
+
 		// When retriving from an insecure location set the repo to the
 		// insecure location.
 		if insecure {
diff --git a/glide.lock b/glide.lock
index 7bd39fd..2494ed3 100644
--- a/glide.lock
+++ b/glide.lock
@@ -1,8 +1,10 @@
 hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
-updated: 2015-12-09T10:30:35.945332257-05:00
+updated: 2015-12-09T10:37:37.177792534-05:00
 imports:
 - name: github.com/codegangsta/cli
   version: 0302d3914d2a6ad61404584cdae6e6dbc9c03599
+- name: github.com/Masterminds/convert
+  version: a9949121a2e2192ca92fa6dddfeaaa4a4412d955
 - name: github.com/Masterminds/cookoo
   version: 78aa11ce75e257c51be7ea945edb84cf19c4a6de
   repo: git@github.com:Masterminds/cookoo.git
diff --git a/glide.yaml b/glide.yaml
index caa6878..59b541f 100644
--- a/glide.yaml
+++ b/glide.yaml
@@ -1,14 +1,14 @@
 package: github.com/Masterminds/glide
 import:
-  - package: gopkg.in/yaml.v2
-  - package: github.com/Masterminds/cookoo
-    version: ^1.2.0
-    repo:    git@github.com:Masterminds/cookoo.git
-    vcs:     git
-    subpackages:
-      - .
-  - package: github.com/Masterminds/vcs
-    version: ^1.2.0
-  - package: github.com/codegangsta/cli
-  - package: github.com/Masterminds/semver
-    version: ^1.0.0
+- package: gopkg.in/yaml.v2
+- package: github.com/Masterminds/cookoo
+  version: ^1.2.0
+  repo: git@github.com:Masterminds/cookoo.git
+  vcs: git
+  subpackages:
+  - .
+- package: github.com/Masterminds/vcs
+  version: ^1.2.0
+- package: github.com/codegangsta/cli
+- package: github.com/Masterminds/semver
+  version: ^1.0.0