Remove codecov.io and add simplecov

Gemfile

@@ -129,10 +129,10 @@ group :development, :ci, :test do
   gem 'factory_bot'
 	gem 'factory_bot_rails'
 	gem 'action_mailer_matchers'
+  gem 'simplecov', '~> 0.16.1', require: false
 end
 
 group :test do
-  gem 'codecov', require: false
 	gem 'vcr'
   gem 'webmock'
 end

Gemfile.lock

@@ -112,10 +112,6 @@ GEM
       aws-sdk (~> 1.58)
       carrierwave (~> 0.7)
     chronic (0.10.2)
-    codecov (0.1.5)
-      json
-      simplecov
-      url
     coderay (1.1.2)
     coercible (1.0.0)
       descendants_tracker (~> 0.0.1)
@@ -159,7 +155,7 @@ GEM
     devise-async (0.9.0)
       devise (~> 3.2)
     diff-lcs (1.2.5)
-    docile (1.1.5)
+    docile (1.3.1)
     domain_name (0.5.20160615)
       unf (>= 0.0.5, < 1.0.0)
     dotenv (2.0.1)
@@ -389,11 +385,11 @@ GEM
       railties (~> 3.2.0)
       sass (>= 3.1.10)
       tilt (~> 1.3)
-    simplecov (0.12.0)
-      docile (~> 1.1.0)
+    simplecov (0.16.1)
+      docile (~> 1.1)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.0)
+    simplecov-html (0.10.2)
     sixarm_ruby_unaccent (1.2.0)
     sprockets (2.2.3)
       hike (~> 1.2)
@@ -426,7 +422,6 @@ GEM
       unf_ext
     unf_ext (0.0.7.2)
     unicode_utils (1.4.0)
-    url (0.3.2)
     vcr (2.9.3)
     virtus (1.0.5)
       axiom-types (~> 0.1)
@@ -455,7 +450,6 @@ DEPENDENCIES
   carrierwave
   carrierwave-aws
   chronic
-  codecov
   colorize
   config (> 1.5)
   countries
@@ -513,6 +507,7 @@ DEPENDENCIES
   ruby-prof (= 0.15.9)
   sass (= 3.2.19)
   sass-rails (= 3.2.6)
+  simplecov (~> 0.16.1)
   sprockets
   stripe
   stripe-ruby-mock (~> 2.4.1)!