added logo and build badge

Author: markleader

README.md

@@ -1,6 +1,9 @@
+[![Build and docs](https://github.com/nasa/cea/actions/workflows/docs.yml/badge.svg)](https://github.com/nasa/cea/actions/workflows/docs.yml)
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
 # CEA (Chemical Equilibrium with Applications)
+![CEA logo](docs/source/images/logo.png)
+
 A modernized version of NASA's Chemical Equilibrium with Applications.
 
 Online documentation and examples are located at <https://nasa.github.io/cea/>

docs/logo.tex

@@ -2,14 +2,14 @@
 \usepackage{cabin}
 \usepackage{xcolor}
 
-% \definecolor{logoText}{HTML}{CB443A}
-% \definecolor{logoParabola}{HTML}{76A5E5}
+\definecolor{logoText}{HTML}{CB443A}
+\definecolor{logoParabola}{HTML}{76A5E5}
 
 % \definecolor{logoText}{HTML}{595959}
 % \definecolor{logoParabola}{HTML}{006ba4}
 
-\definecolor{logoText}{HTML}{1C1C1C}
-\definecolor{logoParabola}{HTML}{4DB3FF}
+% \definecolor{logoText}{HTML}{1C1C1C}
+% \definecolor{logoParabola}{HTML}{4DB3FF}
 
 % \definecolor{logoText}{HTML}{202A44}
 % \definecolor{logoParabola}{HTML}{A6CE39}