added an acknowledgement section

paper/paper.md

@@ -37,7 +37,7 @@ bibliography: paper.bib
 
 # Summary
 
-The dynamical evolution of planetary systems is dominated by gravitational interactions between massive bodies. Determining the orbits of massive bodies over long time scales is the first step towards understanding the formation and evolution of planets, moons, asteroids, comets, and more. To model these systems, which often include hundreds or thousands of gravitationally interacting bodies, a numerical tool called an N-body integrator is often employed. 
+The dynamical evolution of planetary systems is dominated by gravitational interactions between massive bodies. Determining the orbits of massive bodies over long time scales is the first step towards understanding the formation and evolution of planets, moons, asteroids, comets, and more. To model these systems, which often include hundreds or thousands of gravitationally interacting bodies, a numerical tool called an n-body integrator is often employed. 
 
 # Statement of Need
 
@@ -47,5 +47,9 @@ Building off a strong legacy, including its predecessors `Swifter` [@Duncan:1998
 
 The combination of modern programming practices, flexible data processing tools, and the latest advances in the field of collisional dynamics make `Swiftest` the ideal tool for studying the formation of planetary systems, the growth of planetary moons, the evolution of asteroid families, and beyond.
 
+# Acknowledgements
+
+`Swiftest` was developed at Purdue University and was funded under the NASA Emerging Worlds and Solar System Workings programs. Active development by the Purdue Swiftest Team is ongoing and contributions from the community are highly encouraged.
+
 # References