Merge pull request #23 from Tolriq/typo

Fix typo

library/src/main/java/com/afollestad/materialdialogs/MaterialDialog.java

@@ -589,7 +589,7 @@ public class MaterialDialog extends DialogBase implements View.OnClickListener,
          * @param processor The processor to apply to all non single/multi choice list items.
          * @return The Builder instance so you can chain calls to it.
          */
-        public Builder itemProessor(ItemProcessor processor) {
+        public Builder itemProcessor(ItemProcessor processor) {
             this.itemProcessor = processor;
             return this;
         }

sample/src/main/java/com/afollestad/materialdialogssample/MainActivity.java

@@ -257,7 +257,7 @@ public class MainActivity extends ActionBarActivity {
                         Toast.makeText(getApplicationContext(), which + ": " + text, Toast.LENGTH_SHORT).show();
                     }
                 })
-                .itemProessor(new ButtonItemProcessor(this))
+                .itemProcessor(new ButtonItemProcessor(this))
                 .build()
                 .show();
     }