Enable javascript encode settings

I made capable plugin setting javascript encoding.
In multi os develop environment, we need setting encoding.

Please confirm and accept it.

SettingSamples

    <plugin>
        <groupId>org.nanoko.coffee-mill</groupId>
        <artifactId>coffee-mill-maven-plugin</artifactId>
        <version>1.0.1</version>
        <extensions>true</extensions>
        <configuration>
            <javaScriptDir>src/main/webapp/resources/js</javaScriptDir>
            <javaScriptTestDir>src/test/webapp/spec</javaScriptTestDir>
            <skipJsHint>false</skipJsHint>
            <javaScriptEncoding>UTF-8</javaScriptEncoding> <!-- Set encoding -->
        </configuration>
        <executions>
            <execution> 
                <id>jshint-staticcheck</id>
                <phase>compile</phase>
                <goals>
                    <goal>compile-javascript</goal>
                </goals>
        </executions>
    </plugin>