Update README.md

Author: csparker247

README.md

@@ -1,6 +1,6 @@
 [![OpenABF](docs/images/banner.svg)](https://gitlab.com/educelab/OpenABF)
 
-**OpenABF** is A header-only library of angle-based flattening algorithms for 
+**OpenABF** is a header-only library of angle-based flattening algorithms for 
 C++. It is designed to be as simple as possible to integrate into existing 
 projects.
 
@@ -108,4 +108,4 @@ following publications:
 * Alla Sheffer and Eric de Sturler. Parameterization of faceted surfaces for meshing using angle-based flattening. Engineering with Computers, 17(3):326–337, 2001.
 * Bruno Lévy, Sylvain Petitjean, Nicolas Ray, and Jérome Maillot. Least squares conformal maps for automatic texture atlas generation. ACM Transactions on Graphics (TOG), 21(3):362–371, 2002.
 * Alla Sheffer, Bruno Lévy, Maxim Mogilnitsky, and Alexander Bogomyakov. Abf++: fast and robust angle based flattening. ACM Transactions on Graphics (TOG), 24(2):311–330, 2005.
-* S. Marschner, P. Shirley, M. Ashikhmin, M. Gleicher, N. Hoffman, G. Johnson, T. Munzner, E. Reinhard, W.B. Thompson, P. Willemsen, and B. Wyvill. Fundamentals of computer graphics. 4th edition, 2015.
+* S. Marschner, P. Shirley, M. Ashikhmin, M. Gleicher, N. Hoffman, G. Johnson, T. Munzner, E. Reinhard, W.B. Thompson, P. Willemsen, and B. Wyvill. Fundamentals of computer graphics. 4th edition, 2015.