Update ReadMe with clone and build instructions

Author: LegalizeAdulthood

ReadMe.md

@@ -4,6 +4,30 @@
 
 Sample code for the video Project Template.
 
+# Obtaining the Source
+
+Use git to clone this repository, then update the vcpkg submodule to bootstrap
+the dependency process.
+
+```
+git clone https://github.com/LegalizeAdulthood/utah-cpp-project-template
+cd utah-cpp-project-template
+git submodule init
+git submodule update --depth 1
+```
+
+# Building
+
+A CMake preset has been provided to perform the usual CMake steps of
+configure, build and test.
+
+```
+cmake --workflow --preset default
+```
+
+Places the build outputs in a sibling directory of the source code directory, e.g. up
+and outside of the source directory.
+
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