Update README.md

README.md

@@ -8,11 +8,20 @@ The datastructure is capable of performing the following queries:
   2. get the visible surface area
 
 ## Building
+
+Create a build directory and setup cmake
 ```
 mkdir build
 cd build
 cmake ..
+```
+
+Build code
+```
 make
-./tests
 ```
 
+Run tests 
+```
+./tests
+```
\ No newline at end of file