cart creation backend logic is at place / adding items in progress

front-api/Gemfile.lock

@@ -20,6 +20,7 @@ GEM
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     arel (6.0.0)
+    backports (3.6.4)
     builder (3.2.2)
     i18n (0.7.0)
     jdbc-postgres (9.3.1102)
@@ -27,6 +28,7 @@ GEM
     json (1.8.1)
     json (1.8.1-java)
     minitest (5.5.0)
+    multi_json (1.10.1)
     pg (0.17.1)
     puma (2.10.2)
       rack (>= 1.1, < 2.0)
@@ -35,6 +37,8 @@ GEM
     rack (1.6.0)
     rack-protection (1.5.3)
       rack
+    rack-test (0.6.3)
+      rack (>= 1.0)
     sinatra (1.4.5)
       rack (~> 1.4)
       rack-protection (~> 1.4)
@@ -42,6 +46,13 @@ GEM
     sinatra-activerecord (2.0.3)
       activerecord (>= 3.2)
       sinatra (~> 1.0)
+    sinatra-contrib (1.4.2)
+      backports (>= 2.0)
+      multi_json
+      rack-protection
+      rack-test
+      sinatra (~> 1.4.0)
+      tilt (~> 1.3)
     thread_safe (0.3.4)
     thread_safe (0.3.4-java)
     tilt (1.4.1)
@@ -61,3 +72,4 @@ DEPENDENCIES
   puma
   sinatra
   sinatra-activerecord
+  sinatra-contrib