API docs and sample Ruby scripts

doc/api/examples/ruby/example_1.rb

@@ -0,0 +1,26 @@
+require 'http'
+
+API_ENDPOINT = 'https://decide.madrid.es/graphql'
+
+def make_request(query_string)
+  HTTP.headers('User-Agent' => 'Mozilla/5.0', accept: 'application/json')
+      .get(
+        API_ENDPOINT,
+        params: { query: query_string.gsub("\n", '').gsub(" ", '') }
+      )
+end
+
+query = """
+  {
+    proposal(id: 1) {
+        id,
+        title,
+        public_created_at
+    }
+  }
+"""
+
+response = make_request(query)
+
+puts "Response code: #{response.code}"
+puts "Response body: #{response.body}"