create contributor file.

CONTRIBUTORS.md

@@ -0,0 +1,47 @@
+# Contributions to the OpenBLAS project
+
+## Creator & Maintainer
+
+* Zhang Xianyi <traits.zhang@gmail.com>
+
+## Active Developers
+
+* Wang Qian <traz0824@gmail.com>
+* Zaheer Chothia <zaheer.chothia@gmail.com>
+
+## Contributors
+
+In chronological order:
+
+* pipping <http://page.mi.fu-berlin.de/pipping>
+  * Make USE_OPENMP=0 disable openmp
+
+* Stefan Karpinski <stefan@karpinski.org>
+  * Fix a bug about SystemStubs on Mac OS X.
+
+* Mike Nolta <mike@nolta.net>
+  * Fix building bug on FreeBSD and NetBSD
+
+* Jameson Nash <https://github.com/vtjnash>
+  * provide support for passing CFLAGS, FFLAGS, PFLAGS, FPFLAGS to make on the command line
+
+* Alexander Nasonov <alnsn@yandex.ru>
+  * Fix NetBSD build
+
+* Sébastien Villemot <sebastien@debian.org>
+  * Fix compilation with TARGET=GENERIC. Patch applied to Debian package
+
+* Kenneth Hoste <kenneth.hoste@gmail.com>
+  * adjusted Makefile about downloading LAPACK source files
+
+* Werner Saar <wernsaar@googlemail.com>
+  * Optimize AVX and FMA4 kernels on AMD Bulldozer
+
+* Lei WANG <https://github.com/wlbksy>
+  * Fix a bug about wget
+
+* grisuthedragon <https://github.com/grisuthedragon>
+  * create openblas_get_parallel to retrieve information which parallelization model is used by OpenBLAS.
+
+* [Your name or handle] <[email or website]>
+  * [Brief summary of your changes]