Update README.md (#140)

* Update README.md

Fix "planetilerler" typo on "java" line.
Nudge non-Java people into adding methods inside their new class, not outside it.

planetiler-examples/README.md

@@ -56,7 +56,8 @@ public class MyProfile implements Profile {
 }
 ```
 
-Then, implement the `processFeature()` method that determines what vector tile features to emit for each source feature.
+Then, implement the `processFeature()` method in your class (add the code before the last closing curly bracket)
+that determines what vector tile features to emit for each source feature.
 For example, to include a map of [toilets from OpenStreetMap](https://wiki.openstreetmap.org/wiki/Tag:amenity=toilets)
 at zoom level 12 and above:
 
@@ -98,7 +99,7 @@ mvn clean package --file standalone.pom.xml
 And run the application:
 
 ```bash
-java -cp target/*-with-deps.jar com.onthegomap.planetilerler.examples.MyProfile
+java -cp target/*-with-deps.jar com.onthegomap.planetiler.examples.MyProfile
 ```
 
 Then, to inspect the tiles: