docs: fix javadoc issues

src/main/java/com/github/mjeanroy/maven/plugins/node/loggers/NpmLogger.java

@@ -30,7 +30,7 @@
  * Create a logger that process {@code npm} command output and redirect
  * the line to a maven logger with the appropriate log level.
  *
- * <h3>How is the log level detected?</h3>
+ * <h2>How is the log level detected?</h2>
  *
  * The log level is detected using {@code npm} output:
  *

src/main/java/com/github/mjeanroy/maven/plugins/node/model/EngineConfig.java

@@ -46,6 +46,9 @@ public final class EngineConfig {
 	 */
 	private Map<String, String> requirements;
 
+	/**
+	 * Create default config.
+	 */
 	public EngineConfig() {
 		this.strict = false;
 		this.requirements = new LinkedHashMap<>();

src/main/java/com/github/mjeanroy/maven/plugins/node/model/IncrementalBuildConfiguration.java

@@ -105,6 +105,9 @@ public final class IncrementalBuildConfiguration {
 	 */
 	private IncrementalBuildGoalConfiguration preClean;
 
+	/**
+	 * Create configuration with default settings.
+	 */
 	public IncrementalBuildConfiguration() {
 		this.enabled = true;
 		this.useDefaultIncludes = true;
@@ -380,7 +383,7 @@ private List<String> goalIncludes(String goal) {
 		return configuration == null ? Collections.<String>emptyList() : configuration.getIncludes();
 	}
 
-	public List<String> goalExcludes(String goal) {
+	private List<String> goalExcludes(String goal) {
 		IncrementalBuildGoalConfiguration configuration = getGoalConfiguration(goal);
 		return configuration == null ? Collections.<String>emptyList() : configuration.getExcludes();
 	}

src/main/java/com/github/mjeanroy/maven/plugins/node/model/IncrementalBuildGoalConfiguration.java

@@ -59,6 +59,9 @@ public final class IncrementalBuildGoalConfiguration {
 	 */
 	private boolean useDefaultExcludes;
 
+	/**
+	 * Create configuration with default settings.
+	 */
 	public IncrementalBuildGoalConfiguration() {
 		this.enabled = true;
 		this.includes = new ArrayList<>();

src/main/java/com/github/mjeanroy/maven/plugins/node/model/LockStrategy.java

@@ -31,19 +31,31 @@
  */
 public enum LockStrategy {
 
+	/**
+	 * Read strategy: acquire a read lock.
+	 */
 	READ {
 		@Override
 		public Lock getLock(ReadWriteLock rwLock) {
 			return rwLock.readLock();
 		}
 	},
 
+	/**
+	 * Write strategy: acquire a write lock.
+	 */
 	WRITE {
 		@Override
 		public Lock getLock(ReadWriteLock rwLock) {
 			return rwLock.writeLock();
 		}
 	};
 
+	/**
+	 * Acquire lock, given "this" strategy.
+	 *
+	 * @param rwLock The lock.
+	 * @return The lock.
+	 */
 	public abstract Lock getLock(ReadWriteLock rwLock);
 }