added links document

Election/Gemfile

@@ -4,7 +4,7 @@ source 'http://rubygems.org'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '4.2.6'
 # Use sqlite3 as the database for Active Record
-gem 'sqlite3'
+#gem 'sqlite3'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets

Election/Gemfile.lock

@@ -148,7 +148,6 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    sqlite3 (1.3.11-x86-mingw32)
     thor (0.19.1)
     thread_safe (0.3.5)
     tilt (2.0.5)
@@ -185,7 +184,6 @@ DEPENDENCIES
   sass-rails (~> 5.0)
   sdoc (~> 0.4.0)
   simple_form
-  sqlite3
   turbolinks
   tzinfo-data
   uglifier (>= 1.3.0)