Add contributing and acknowledgments sections to README #146

Job	Run time
test-langs (ubuntu-latest, 3.10, c)	2m 22s
test-langs (ubuntu-latest, 3.10, cxx)	2m 25s
test-langs (ubuntu-latest, 3.10, python)	1m 42s
test-langs (ubuntu-latest, 3.10, fortran)	2m 38s
test-langs (ubuntu-latest, 3.11, c)	2m 20s
test-langs (ubuntu-latest, 3.11, cxx)	2m 23s
test-langs (ubuntu-latest, 3.11, python)	1m 51s
test-langs (ubuntu-latest, 3.11, fortran)	2m 34s
test-langs (ubuntu-latest, 3.12, c)	2m 22s
test-langs (ubuntu-latest, 3.12, cxx)	2m 20s
test-langs (ubuntu-latest, 3.12, python)	1m 49s
test-langs (ubuntu-latest, 3.12, fortran)	2m 32s
test-langs (macos-latest, 3.10, c)	8m 7s
test-langs (macos-latest, 3.10, cxx)	3m 57s
test-langs (macos-latest, 3.10, python)	2m 43s
test-langs (macos-latest, 3.10, fortran)	5m 9s
test-langs (macos-latest, 3.11, c)	4m 0s
test-langs (macos-latest, 3.11, cxx)	4m 8s
test-langs (macos-latest, 3.11, python)	3m 9s
test-langs (macos-latest, 3.11, fortran)	4m 19s
test-langs (macos-latest, 3.12, c)	3m 58s
test-langs (macos-latest, 3.12, cxx)	8m 27s
test-langs (macos-latest, 3.12, python)	3m 16s
test-langs (macos-latest, 3.12, fortran)	4m 30s
	1h 23m 1s

Provide feedback