Update authors

Author: luisbarrancos

AUTHORS.txt

@@ -1,11 +1,11 @@
 
-Andy Gill: wrote the first Shrimp version
+Andy Gill: wrote the first Shrimp version.
 
-Luis Barrancos (aka rconstruct): RenderMan Shader Language guru, rewrote and greatly enhanced all the blocks
+Luis Barrancos (aka rconstruct): rewrote and added RSL blocks, scenes, shading networks.
 
-Romain Behar: rewrote Shrimp entirely using FLTK 2 and OpenGL
+Romain Behar: rewrote Shrimp entirely using FLTK 2 and OpenGL.
 
-Freddy Chaleur (aka fredfewo): added box selection, copy paste and delete of blocks and groups, improved mouse control, wrote spline arrows to connect block, created automatically generated HTML block documentation
+Freddy Chaleur (aka fredfewo): added box selection, copy paste and delete of blocks and groups, improved mouse control, wrote spline arrows to connect block, created automatically generated HTML block documentation.
 
-Matthew Lawrence: OpenGL code cleanup, replaced round corners with vertex arrays and GL_POLYGON_STRIP and improved performances dramatically; made it MESA stack compatible
+Matthew Lawrence: OpenGL code cleanup, replaced round corners with vertex arrays and GL_POLYGON_STRIP and improved performances dramatically; made it MESA stack compatible.