Feature/expose http handlers (#224)

* temp commit

* trying to work out how to expose the http handlers in a decent way..

* pissing about at lunch

* changed to func so you can instanciate object or new it up each time

* docs for dele handlers

* upgraded to sdk 2.1.4

* some validation for consul services

test/Ocelot.UnitTests/Requester/QosProviderHouseTests.cs

@@ -1,10 +1,8 @@
 using Moq;
 using Ocelot.Configuration;
 using Ocelot.Configuration.Builder;
-using Ocelot.LoadBalancer.LoadBalancers;
 using Ocelot.Requester.QoS;
 using Ocelot.Responses;
-using Ocelot.UnitTests.LoadBalancer;
 using Shouldly;
 using TestStack.BDDfy;
 using Xunit;