Update README.md

Author: BaseMax

README.md

@@ -1,3 +1,15 @@
 # First TypeScript (ExpressTS <=> ExpressJS)
 
 First program in **TS**, simple Express application in **TS** which will convert to **JavaScript**.
+
+**Build:**
+
+```
+$ yarn build
+```
+
+**Start:**
+
+```
+$ yarn start
+```