Update tutorial_50.md

Author: simply-coded

code/tutorial_50/tutorial_50.md

@@ -3,6 +3,8 @@
 #### What / Why?
 > A package is a group of class files.  
 
+> Packages help organize your code.  
+
 > Packages help keep your code unique from other people so you can resolve conflicts in your code if you have two or more classes with the same name.  
 
 #### Naming conventions
@@ -69,4 +71,4 @@ javac -d ./ @sources.txt
 >Compiles all your java files to a folder called bin, in the current directory.
 ```
 javac -d ./bin @sources.txt
-```
+```