public async override Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context) {

			context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { "*" });

			// TODO Check username and password against database. Investigate possible async repo. Step 6 from http://bitoftech.net/2014/06/01/token-based-authentication-asp-net-web-api-2-owin-asp-net-identity/

			using (AuthRepository _repo = new AuthRepository()) {
				IdentityUser user = await _repo.FindUser(context.UserName, context.Password);

				if (user == null) {
					context.SetError("invalid_grant", "The user name or password is incorrect.");
					return;
				}
			}

			var identity = new ClaimsIdentity(context.Options.AuthenticationType);
			identity.AddClaim(new Claim("sub", context.UserName));
			identity.AddClaim(new Claim("role", "user"));

			context.Validated(identity);
			
			return;
		}
		public AccountApiController() {
			_repo = new AuthRepository();
		}