How to embed a chatbot to a website?

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C#

Microsoft

Chat

bots

Dear Experts,
I am looking for step by step guidance to achieve the following:

I have created a chatbot using Microsft Chatbot Framework in VS2015 and tested it in

botframework-emulator

It is working fine.

Now I want to embed it into a website(Locally for testing/in a Hosted website afterwards), So I have some question regarding it.

1. How to embed it to a website?(Do I need to register somewhere? is it free to use?) -> Looking for step by step guidance.
2. Can I use it on any website of any platform?(can i use it for 2 or more website?)(can I embed it to asp.net/php website?)
3. After implementing it to a website, If I need to do some minor changes in chatbot what should be the major step I have to taken?(Do i need to register it again or pay to somewhere again?)

What I have tried:

I am still exploring the documents.