Update README (#135)

Signed-off-by: Michael Edgar <[email protected]>

README.md

@@ -14,11 +14,17 @@ try (JsonParser parser = Yaml.createParser(reader)) {
 ```
 
 module-info.java:
+
 ```java
 module your.module {
+
     // ...
     requires io.xlate.yamljson;
-    // ...
+
+    // One of the following (if not using the --add-modules java option)
+    requires org.snakeyaml.engine.v2;
+    requires org.yaml.snakeyaml;
+
 }
 ```
 
@@ -46,9 +52,13 @@ Pick one of the two listed by choosing a dependency.
   ```
 
 ## Supported YAML Services
-Placing one of the two supported YAML libraries on the class/module path will enable that library within `yaml-json`. Note, when using JPMS modules, you must also add the module via the `java` command.
+Placing one of the two supported YAML libraries on the class/module path will enable that library within `yaml-json`.
+Note, when using JPMS modules, you must also add the module via the `java` command or your application's `module-info.java` file.
 
-If *both* libraries are present in your application, you can specify which to use by creating one of the factories in the `io.xlate.yamljson.Yaml` class and passing a configuration property with key `io.xlate.yamljson.Yaml.Settings.YAML_VERSION` and one of the values `io.xlate.yamljson.Yaml.Versions.V1_1` or `io.xlate.yamljson.Yaml.Versions.V1_2`. Note, the values specified here are the names of constants, NOT the values themselves.
+If *both* libraries are present in your application, you can specify which to use by creating one of the factories in the
+`io.xlate.yamljson.Yaml` class and passing a configuration property with key `io.xlate.yamljson.Yaml.Settings.YAML_VERSION`
+and one of the values `io.xlate.yamljson.Yaml.Versions.V1_1` or `io.xlate.yamljson.Yaml.Versions.V1_2`. Note, the values
+specified here are the names of constants, NOT the values themselves.
 
 ### SnakeYaml (YAML 1.1):
   ```xml
@@ -58,7 +68,7 @@ If *both* libraries are present in your application, you can specify which to us
     <version>${version.snakeyaml}</version>
   </dependency>
   ```
-  Add to `java` command: `--add-modules=org.yaml.snakeyaml`
+*Note*: If using JPMS, also include `org.yaml.snakeyaml` as required in `module-info` or add to `java` command: `--add-modules=org.yaml.snakeyaml`
 
 ### SnakeYaml Engine (YAML 1.2):
   ```xml
@@ -68,5 +78,5 @@ If *both* libraries are present in your application, you can specify which to us
     <version>${version.snakeyaml-engine}</version>
   </dependency>
   ```
-  Add to `java` command: `--add-modules=org.snakeyaml.engine.v2`
+*Note*: If using JPMS, also include `org.snakeyaml.engine.v2` as required in `module-info` or add to `java` command: `--add-modules=org.snakeyaml.engine.v2`