Update DESCRIPTION and README to include additional website link and installation instructions

Author: alex-omophub

DESCRIPTION

@@ -12,7 +12,8 @@ Description: Provides an R interface to the 'OMOPHub' API for accessing
 License: MIT + file LICENSE
 URL: https://github.com/omopHub/omophub-R,
     https://docs.omophub.com,
-    https://omophub.github.io/omophub-R/
+    https://omophub.github.io/omophub-R/,
+    https://omophub.com
 BugReports: https://github.com/omopHub/omophub-R/issues
 Depends: R (>= 4.1)
 Imports:

README.md

@@ -16,6 +16,10 @@ R client for the [OMOPHub API](https://docs.omophub.com), providing access to OH
 You can install the development version of omophub from [GitHub](https://github.com/omopHub/omophub-R):
 
 ```r
+install.packages("omophub")
+
+# OR install from GitHub
+
 # install.packages("pak")
 pak::pak("omopHub/omophub-R")
 ```
@@ -151,3 +155,4 @@ MIT License - see [LICENSE](LICENSE) for details.
 
 - [GitHub Issues](https://github.com/omopHub/omophub-r/issues)
 - [Documentation](https://docs.omophub.com)
+- [Website](https://omophub.com)