Fixes

- Add missing param description to StringAdapter
- Add libxml2-utils as dependency to Travis build

Author: marcospassos

.travis.yml

@@ -9,6 +9,10 @@ before_install:
   - if [ ! -z "$GPG_OWNERTRUST" ]; then echo $GPG_OWNERTRUST | base64 --decode | $GPG_EXECUTABLE --import-ownertrust; fi
 after_success:
   - mvn clean cobertura:cobertura coveralls:report -DrepoToken=${COVERALL_TOKEN}
+addons:
+  apt:
+    packages:
+      - libxml2-utils
 deploy:
   -
     provider: script

src/main/java/com/marcospassos/phpserializer/adapter/StringAdapter.java

@@ -28,7 +28,7 @@ public StringAdapter() {
     /**
      * Creates a adapter for strings encoded with the specified charset.
      *
-     * @param charset
+     * @param charset The charset to encode strings.
      */
     public StringAdapter(Charset charset) {
         this.charset = charset;