Adding create users operation :man_with_gua_pi_mao:
diff --git a/openstack/identity/v2/users/requests.go b/openstack/identity/v2/users/requests.go
index 85621f1..ec17c20 100644
--- a/openstack/identity/v2/users/requests.go
+++ b/openstack/identity/v2/users/requests.go
@@ -1,6 +1,9 @@
 package users
 
 import (
+	"errors"
+
+	"github.com/racker/perigee"
 	"github.com/rackspace/gophercloud"
 	"github.com/rackspace/gophercloud/pagination"
 )
@@ -12,3 +15,81 @@
 
 	return pagination.NewPager(client, rootURL(client), createPage)
 }
+
+// EnabledState represents whether the user is enabled or not.
+type EnabledState *bool
+
+// Useful variables to use when creating or updating users.
+var (
+	iTrue  = true
+	iFalse = false
+
+	Enabled  EnabledState = &iTrue
+	Disabled EnabledState = &iFalse
+)
+
+// CreateOpts represents the options needed when creating new users.
+type CreateOpts struct {
+	// Either a name or username is required. When provided, the value must be
+	// unique or a 409 conflict error will be returned. If you provide a name but
+	// omit a username, the latter will be set to the former; and vice versa.
+	Name, Username string
+
+	// The ID of the tenant to which you want to assign this user.
+	TenantID string
+
+	// Indicates whether this user is enabled or not.
+	Enabled EnabledState
+
+	// The email address of this user.
+	Email string
+}
+
+// CreateOptsBuilder describes struct types that can be accepted by the Create call.
+type CreateOptsBuilder interface {
+	ToUserCreateMap() (map[string]interface{}, error)
+}
+
+// ToUserCreateMap assembles a request body based on the contents of a CreateOpts.
+func (opts CreateOpts) ToUserCreateMap() (map[string]interface{}, error) {
+	m := make(map[string]interface{})
+
+	if opts.Name == "" && opts.Username == "" {
+		return m, errors.New("Either a Name or Username must be provided")
+	}
+
+	if opts.Name != "" {
+		m["name"] = opts.Name
+	}
+	if opts.Username != "" {
+		m["username"] = opts.Username
+	}
+	if opts.Enabled != nil {
+		m["enabled"] = &opts.Enabled
+	}
+	if opts.Email != "" {
+		m["email"] = opts.Email
+	}
+
+	return m, nil
+}
+
+// Create is the operation responsible for creating new users.
+func Create(client *gophercloud.ServiceClient, opts CreateOptsBuilder) CreateResult {
+	var res CreateResult
+
+	reqBody, err := opts.ToUserCreateMap()
+	if err != nil {
+		res.Err = err
+		return res
+	}
+
+	_, res.Err = perigee.Request("POST", rootURL(client), perigee.Options{
+		Results:     &res.Body,
+		ReqBody:     reqBody,
+		MoreHeaders: client.AuthenticatedHeaders(),
+		OkCodes:     []int{200, 201},
+	})
+
+	return res
+}