Replace coveralls with Codacy

Gemfile.lock

@@ -58,6 +58,8 @@ GEM
       autoprefixer-rails (>= 5.2.1)
       sassc (>= 2.0.0)
     builder (3.2.3)
+    codacy-coverage (2.1.0)
+      simplecov
     codemirror-rails (5.16.0)
       railties (>= 3.0, < 6.0)
     coffee-rails (4.2.2)
@@ -68,12 +70,6 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.1.4)
-    coveralls (0.8.22)
-      json (>= 1.8, < 3)
-      simplecov (~> 0.16.1)
-      term-ansicolor (~> 1.3)
-      thor (~> 0.19.4)
-      tins (~> 1.6)
     crass (1.0.4)
     devise (4.5.0)
       bcrypt (~> 3.0)
@@ -102,7 +98,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.6)
+    json (2.1.0)
     jwt (2.1.0)
     loofah (2.2.3)
       crass (~> 1.0.2)
@@ -213,12 +209,9 @@ GEM
     sqlite3 (1.3.13)
     sqlite3 (1.3.13-x64-mingw32)
     sqlite3 (1.3.13-x86-mingw32)
-    term-ansicolor (1.7.1)
-      tins (~> 1.0)
     thor (0.19.4)
     thread_safe (0.3.6)
     tilt (2.0.9)
-    tins (1.20.2)
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
@@ -253,9 +246,9 @@ DEPENDENCIES
   bh (~> 1.3.6)
   bootsnap
   bootstrap-sass (~> 3.4.0)
+  codacy-coverage
   codemirror-rails (~> 5.16.0)
   coffee-rails (~> 4.2.2)
-  coveralls (~> 0.8.22)
   devise (~> 4.5.0)
   devise-bootstrap-views (~> 0.0.11)
   jbuilder (~> 2.8.0)