Add CITATION.cff file for academic referencing (#985)

* Initial plan

* Add CITATION.cff file for academic referencing

Co-authored-by: jpn-- <[email protected]>

* Change copyright holder in LICENSE file

Updated copyright holder from Association of Metropolitan Planning Organizations Research Foundation to Zephyr Foundation.

* Update README to remove status badges

Removed Build and Coverage Status badges from README, and add link to Zephyr page.

* Update CITATION.cff per review feedback

Co-authored-by: jpn-- <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: jpn-- <[email protected]>
Co-authored-by: Jeffrey Newman <[email protected]>

Author: Copilot

CITATION.cff

@@ -0,0 +1,24 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+type: software
+title: "ActivitySim"
+abstract: "Advanced, open-source, activity-based travel behavior modeling software based on best software development practices for distribution at no charge to the public."
+authors:
+  - name: "Zephyr Foundation"
+repository-code: "https://github.com/ActivitySim/activitysim"
+url: "https://activitysim.github.io/activitysim"
+license: BSD-3-Clause
+keywords:
+  - "activity-based modeling"
+  - "travel behavior"
+  - "transportation planning"
+  - "microsimulation"
+  - "travel demand modeling"
+preferred-citation:
+  type: software
+  title: "ActivitySim"
+  authors:
+    - name: "Zephyr Foundation"
+  repository-code: "https://github.com/ActivitySim/activitysim"
+  url: "https://activitysim.github.io/activitysim"
+  license: BSD-3-Clause

LICENSE.txt

@@ -1,6 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) Association of Metropolitan Planning Organizations Research Foundation
+Copyright (c) Zephyr Foundation
 
 All rights reserved.
 

README.md

@@ -1,8 +1,6 @@
 ActivitySim
 ===========
 
-[![Build Status](https://travis-ci.com/ActivitySim/activitysim.svg?branch=main)](https://travis-ci.org/github/ActivitySim/activitysim)[![Coverage Status](https://coveralls.io/repos/github/ActivitySim/activitysim/badge.svg?branch=main)](https://coveralls.io/github/ActivitySim/activitysim?branch=main)
-
 The mission of the ActivitySim project is to create and maintain advanced, open-source,
 activity-based travel behavior modeling software based on best software development
 practices for distribution at no charge to the public.
@@ -20,6 +18,6 @@ but it is generally expected that code in the `main` branch should be usable.
 
 ## Helpful Links
 
-- [AMPO Research Foundation](https://research.ampo.org/#research)
+- [Zephyr Foundation](https://activitysim.github.io)
 - [Documentation](https://activitysim.github.io/activitysim)
 - [Releases](https://github.com/ActivitySim/activitysim/releases)