Apache commons dependencies removed.

Ok got it work on Android by overriding few dependecies in my Android project.

Here's a version with removed apache commons dependencies. Those Util classes are pretty quickly written and didn't spent time for commenting...sorry about that.

Please note the Base64 class' license notice. I'm not familiar with licensing things, so not sure if it can be used or not? Probably you can find another Base64 implementation if thats not usable.

Here's my Android projects pom.xml dependency setup if interested:
```   
<dependencies>
        <dependency>
            <groupId>org.littleshoot</groupId>
            <artifactId>littleproxy</artifactId>
            <version>1.0.0-beta6-SNAPSHOT</version>
            <exclusions>
                <exclusion>
                    <groupId>commons-cli</groupId>
                    <artifactId>commons-cli</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>com.google.guava</groupId>
                    <artifactId>guava</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.eclipse.jetty</groupId>
                    <artifactId>jetty-server</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.mockito</groupId>
                    <artifactId>mockito-all</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.seleniumhq.selenium</groupId>
                    <artifactId>selenium-java</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.apache.httpcomponents</groupId>
                    <artifactId>httpclient</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.google.android</groupId>
            <artifactId>android</artifactId>
            <version>2.3.3</version>
            <scope>provided</scope>
          </dependency>
    </dependencies>
```