[issue-65] add EditorConfig configuration file

this fixes #65

.editorconfig

@@ -0,0 +1,19 @@
+# EditorConfig: http://EditorConfig.org
+
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+trim_trailing_whitespace = true
+
+[pom.xml]
+indent_size = 4
+
+[*.java]
+indent_size = 4
+
+[*.{cmd,bat}]
+end_of_line = crlf