feat: adds Lesson 15 README (#341)

* chore fixed typo

Signed-off-by: Anthony D. Mays <anthony@morganlatimer.com>

* chore: add lesson_15 instructions.

* docs: adds reading assignment

---------

Signed-off-by: Anthony D. Mays <anthony@morganlatimer.com>

lesson_14/algos/algos_app/src/main/java/com/codedifferently/lesson14/Lesson14.java

@@ -7,7 +7,7 @@ public static void main(String[] args) {
     printPermutations("abc", "");
 
     System.out.println();
-    System.out.print("The reverse of 'abcd' is: ");
+    System.out.print("The reverse of 'abc' is: ");
     System.out.println(reverseString("abc"));
   }
 

lesson_15/README.md

@@ -0,0 +1,17 @@
+# Lesson 15
+
+## Homework
+
+* Read HFDP 9
+* Complete the [Building a Web Server](#building-a-web-server) exercise.
+
+## Building a Web Server
+
+For this assignment, you will build a NodeJS web server using the TypeScript programming language and the Express framework. The web server will host a website featuring your personal HTML README copied from [lesson_01][lesson-01]. Please create a unique sub-folder to store your files. Please reference the following resources to help you get started:
+
+* [TypeScript for Java/C# Programmers](https://www.typescriptlang.org/docs/handbook/typescript-in-5-minutes-oop.html)
+* [How to set up TypeScript with Node.js and Express](https://blog.logrocket.com/how-to-set-up-node-typescript-express/)
+* [Serving static files in Express](https://expressjs.com/en/starter/static-files.html)
+* [Serving static files example on GitHub](https://github.com/expressjs/express/tree/master/examples/static-files)
+
+[lesson-01]: /lesson_01/