small text edits in README.rst

Author: ryanjdillon

README.rst

@@ -17,8 +17,8 @@ Currently only API documentation has been generated, which you can `find here
 <http://pyotelem.readthedocs.io/en/latest/>`_.
 Some code recipes will be added as soon as possible.
 
-Contributions
-=============
+Contributers
+============
 
   * **Ryan J. Dillon** - Python translations of Matlab and R code specified
     below, and contributions throughout.
@@ -31,7 +31,7 @@ Contributions
 
   * **Martin Biuw** - Original seal physiology code written in R.
 
-  * Code taken or adapted from `Stackoverflow <https://stackoverflow.com/>`_ is in the public domain, and the
+  * Code adapted from `Stackoverflow <https://stackoverflow.com/>`_ is in the public domain, and the
     respective posts where it was found should be linked to in the document
     string of the routines in which it was used.