add new files

app/models/member.rb

@@ -0,0 +1,21 @@
+class Member < ApplicationRecord
+  # Include default devise modules. Others available are:
+  # :confirmable, :lockable, :timeoutable and :omniauthable
+    belongs_to :user,optional: true
+    
+    devise :database_authenticatable, :registerable,
+         :recoverable, :rememberable, :trackable, :validatable,:uid, :confirmable, :lockable
+
+    def self.authenticate_session_token(token)
+	  	if token.nil? || token.blank? || token.to_s == ' '
+	      return false
+	    else
+	      mem = Member.find_by_session_token(token)
+	      if mem.nil?
+	        return false
+	      else
+	        return mem
+	      end
+	    end
+  	end
+end