RapidSpell Web .NET, whether used with JS mode usage, or as Server Controls, is integrated with your web application. The RapidSpell DLLs are referenced by your project and should be included in the application's BIN folder.
As such there are no special deployment instructions, the DLLs and Keyoti_RapidSpell_Web_Common folder's client files, should deploy as part of the referencing web application.
If the project uses the WCF or ASMX services available in RapidSpell, then these also should require no additional configuration.
If the RapidSpell DLLs have been installed in the GAC (on the target server), then your aspx pages must register the assembly using a full reference.
This means the register tag in your aspx pages should contain the correct version, culture and public key.
Eg;
<%@ Register TagPrefix="RapidSpellWeb" Namespace="Keyoti.RapidSpell" Assembly="Keyoti.RapidSpellWeb, Version=3.0.0.0, Culture=neutral, PublicKeyToken=58d9fd2e9ec4dc0e" %>
otherwise the ASP.NET runtime will not be able to find the assembly in the GAC, and they will need to be in the project's bin dir.