added leagues call

lib/sightstone/modules/league_module.rb

@@ -0,0 +1,53 @@
+require 'sightstone/summoner'
+require 'sightstone/league'
+
+class LeagueModule
+  def initialize(sightstone)
+    @sightstone = sightstone
+  end
+  
+  def league(summoner)
+    id = if summoner.is_a? Summoner
+      summoner.id
+    else
+      summoner
+    end
+    
+    uri = "http://prod.api.pvp.net/api/#{@sightstone.region}/v2.1/league/by-summoner/#{id}"
+    response = _get_api_response(uri)
+    _parse_response(response) { |resp|
+      data = JSON.parse(resp)
+      leagueKeys = data.keys
+      leagues = []
+      leagueKeys.each do |key|
+        leagues << League.new(data[key])
+      end
+      return leagues
+    }
+  end
+  
+   private
+
+  def _get_api_response(uri)
+    params = {'api_key' => @sightstone.api_key}
+    RestClient.get(uri, headers={:params => params}) {|response, request, result| response }
+  rescue SocketError => e
+    nil
+
+    end
+
+  def _parse_response(response, &block)
+    response_code = if response.nil?
+    500
+    else
+    response.code
+    end
+    if response_code == 200
+    block.call(response.body)
+    elsif response_code == 404
+      raise Sightstone::SummonerNotFoundException
+    elsif response_code == 500
+      raise Sightstone::SightstoneConnectionException
+    end
+  end
+end