Add Sample API, update README.

README.md

@@ -25,3 +25,7 @@ A user is seeded with email `test@ninjaconcept.com` and password `ninjaconcept`.
 * Get serialized collection roots
 
   `/api/v1/collections/roots`
+
+* Get serialized sample by id
+
+  `/api/v1/samples/:id`

app/api/api.rb

@@ -4,4 +4,5 @@ class API < Grape::API
   formatter :json, Grape::Formatter::ActiveModelSerializers
 
   mount Chemotion::CollectionAPI
+  mount Chemotion::SampleAPI
 end

app/api/chemotion/sample_api.rb

+module Chemotion
+  class SampleAPI < Grape::API
+    resource :samples do
+      desc "Return serialized sample by id"
+      params do
+        requires :id, type: Integer, desc: "Sample id"
+      end
+      route_param :id do
+        get do
+          Sample.find(params[:id])
+        end
+      end
+    end
+  end
+end