Switch to dotenv

Gemfile

@@ -1,14 +1,17 @@
 source "https://rubygems.org"
 
+gem 'dotenv-rails', groups: [:development, :test]
+
 gem "rails", "5.2.0"
 
 gem "dragonfly"
+gem "http"
 gem "jquery-rails"
 gem "omniauth-github"
+gem "pg"
 gem "puma"
 gem "sass-rails"
 gem "simple_form"
-gem "sqlite3"
 gem "uglifier"
 
 group :doc do

Gemfile.lock

@@ -64,6 +64,12 @@ GEM
     crass (1.0.4)
     debug_inspector (0.0.3)
     diff-lcs (1.3)
+    domain_name (0.5.20180417)
+      unf (>= 0.0.5, < 1.0.0)
+    dotenv (2.5.0)
+    dotenv-rails (2.5.0)
+      dotenv (= 2.5.0)
+      railties (>= 3.2, < 6.0)
     dragonfly (1.1.5)
       addressable (~> 2.3)
       multi_json (~> 1.0)
@@ -76,6 +82,15 @@ GEM
     globalid (0.4.1)
       activesupport (>= 4.2.0)
     hashie (3.5.7)
+    http (3.3.0)
+      addressable (~> 2.3)
+      http-cookie (~> 1.0)
+      http-form_data (~> 2.0)
+      http_parser.rb (~> 0.6.0)
+    http-cookie (1.0.3)
+      domain_name (~> 0.5)
+    http-form_data (2.1.1)
+    http_parser.rb (0.6.0)
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
     jquery-rails (4.3.3)
@@ -116,6 +131,7 @@ GEM
     omniauth-oauth2 (1.5.0)
       oauth2 (~> 1.1)
       omniauth (~> 1.2)
+    pg (1.0.0)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
@@ -193,7 +209,6 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    sqlite3 (1.3.13)
     thor (0.20.0)
     thread_safe (0.3.6)
     tilt (2.0.8)
@@ -201,6 +216,9 @@ GEM
       thread_safe (~> 0.1)
     uglifier (4.1.17)
       execjs (>= 0.3.0, < 3)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.7.5)
     websocket-driver (0.7.0)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.3)
@@ -214,9 +232,12 @@ DEPENDENCIES
   better_errors
   binding_of_caller
   capybara
+  dotenv-rails
   dragonfly
+  http
   jquery-rails
   omniauth-github
+  pg
   pry
   puma
   rails (= 5.2.0)
@@ -224,7 +245,6 @@ DEPENDENCIES
   sass-rails
   sdoc
   simple_form
-  sqlite3
   uglifier
 
 BUNDLED WITH