added authors to README

Author: paudetseis

README.md

@@ -8,7 +8,7 @@ processing of earthquake data. These methods are particularly useful for broadba
 ocean-bottom seismic stations, but are also applicable to broadband land stations
 or shorter period instruments (depending on the method selected). The code uses the 
 ``StDb`` package for querying and building a station database and can be used through 
-command-line scripts.Currently the toolbox includes the following methods: 
+command-line scripts. Currently the toolbox includes the following methods: 
 
 - **DL** (Doran and Laske, 2017): Based on Rayleigh-wave polarization at a range of
   frequencies and for the two fundamental mode Rayleigh wave orbits. 
@@ -28,6 +28,12 @@ terms of the azimuth of seismic component `1` (or `N`).
 Installation, Usage, API documentation and scripts are described at 
 https://nfsi-canada.github.io/OrientPy/.
 
+Author: [`Pascal Audet`](https://www.uogeophysics.com/authors/admin/) (Developer and Maintainer)
+
+##### Note
+
+The toolbox **DL** is heavily based on the software [`DLOPy`](https://igppweb.ucsd.edu/~adoran/DLOPy.html) written by [`A. Doran.`](https://igppweb.ucsd.edu/~adoran/)
+
 #### Contributing
 
 All constructive contributions are welcome, e.g. bug reports, discussions or suggestions for new features. You can either [open an issue on GitHub](https://github.com/nfsi-canada/OrientPy/issues) or make a pull request with your proposed changes. Before making a pull request, check if there is a corresponding issue opened and reference it in the pull request. If there isn't one, it is recommended to open one with your rationale for the change. New functionality or significant changes to the code that alter its behavior should come with corresponding tests and documentation. If you are new to contributing, you can open a work-in-progress pull request and have it iteratively reviewed.