Remove included PSRDada sources

now depends again on an external installation of PSRDada

 * set LD_LIBRARY_PATH to point to libpsrdada.so directory; LD_LIBARY_PATH
can be the usual colon separated list
 * add include paths as -I$PATH to CFLAGS, or add paths colon separated to
CFLAGS.

Add co-authors

LICENSE

@@ -14,21 +14,3 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-
-
-The following files are taken from the PSRDada project, see their (website)[http://psrdada.sourceforge.net/] for license information:
-psrdada/ascii_header.c
-psrdada/ascii_header.h
-psrdada/dada_def.h
-psrdada/dada_hdu.c
-psrdada/dada_hdu.h
-psrdada/ipcbuf.c
-psrdada/ipcbuf.h
-psrdada/ipcio.c
-psrdada/ipcio.h
-psrdada/ipcutil.c
-psrdada/ipcutil.h
-psrdada/multilog.c
-psrdada/multilog.h
-psrdada/tmutil.c
-psrdada/tmutil.h

README.md

@@ -50,19 +50,25 @@ build the package
 
 # Dependencies
 
-PSRDada dada\_db exectuable in the PATH; see their [website](https://sourceforge.net)
+PSRDada, see their [website](https://sourceforge.net):
+
+ * PSRDada dada\_db exectuable in the PATH for testing;
+
+ * PSRDada header files needed for compilation, set CPATH or CFLAGS.
+
+ * PSRDada library needed during runtime, set LD\_LIBRARY\_PATH
 
 # License
 Copyright (c) 2018, Jisk Attema
 Apache Software License 2.0.
 
-This packages contains some files from the PSRDada project; a different license could apply.
-See the file *LICENSE.md* from details.
-
 # Contributing
 
 All contributions are welcome!
 Please use the github issue tracker to get in touch.
 
 Contributing authors so far:
 * Jisk Attema
+* Leon Oostrum
+* Liam Connor
+