doc update + small typo fix

Author: mtumilowicz

README.md

@@ -7,15 +7,18 @@ The main goal of this project is to explore `services` based on `Java 9`
 
 _Reference_: [Java 9 Modularity](https://www.amazon.com/Java-Modularity-Developing-Maintainable-Applications/dp/1491954167)  
 
+## project structure
+* **bot** - exploring `uses` and default service implementation
+* **fenchman**, **spaniard** - exploring `provides X with Y`
+* **client** - mock of `GUI`
 ## project description
-Services allow a module to provide implementations to other modules 
-without exporting the concrete implementation class. The module system 
-has special privileges to reach into the provider module to instantiate 
-the nonexported implementation class on behalf of the consumer. This 
-means consumers of the service can use instances of this implementation 
-class, without having access to it directly. Also, a service consumer 
-doesn’t know which module provided an implementation, because the only 
-shared type between provider and consumer is the service type (most 
-often an interface).
+* Services allow modules to provide implementations without explicitly 
+exporting them (the module system has special privileges to reach into 
+the provider module to instantiate the nonexported implementation class 
+on behalf of the consumer).  
+* Consumers of the service can use instances of this implementation 
+class without having access to it directly.  
+* The only shared type between provider and consumer is the service type 
+(most often an interface).
 
 ## project content

spaniard/src/main/java/spaniard/Spaniard.java

@@ -11,7 +11,7 @@ private Spaniard() {
 
     @Override
     public void greeting() {
-        System.out.println("Buenos días!");
+        System.out.println("Buenos días.");
     }
 
     @Override