Add Maple to using property

[summercms]

As per github issue: #235

Example UA

Mozilla/5.0 (Windows; U; en-US; rv:1.8.1.11; Gecko/20071129; Firefox/2.5.0) Maple 6.0.00077

Before

I get the following results:

Lsxiao\UserAgent\UserAgent Object
(
    [browser] => WhichBrowser\Model\Browser Object
        (
            [using] => 
            [family] => WhichBrowser\Model\Family Object
                (
                    [name] => Firefox
                    [alias] => 
                    [version] => WhichBrowser\Model\Version Object
                        (
                            [value] => 2.5.0
                            [hidden] => 
                            [nickname] => 
                            [alias] => 
                            [details] => 
                            [builds] => 
                        )

                )

            [channel] => 
            [stock] => 
            [hidden] => 
            [mode] => 
            [type] => browser
            [alias] => 
        )

After

Lsxiao\UserAgent\UserAgent Object
(
    [browser] => WhichBrowser\Model\Browser Object
        (
            [using] => WhichBrowser\Model\Using Object
                (
                    [name] => Maple
                    [alias] => 
                    [version] => WhichBrowser\Model\Version Object
                        (
                            [value] => 6.0.00077
                            [hidden] => 
                            [nickname] => 
                            [alias] => 
                            [details] => 
                            [builds] => 
                        )

                )

            [family] => WhichBrowser\Model\Family Object
                (
                    [name] => Firefox
                    [alias] => 
                    [version] => WhichBrowser\Model\Version Object
                        (
                            [value] => 2.5.0
                            [hidden] => 
                            [nickname] => 
                            [alias] => 
                            [details] => 
                            [builds] => 
                        )

                )

            [channel] => 
            [stock] => 
            [hidden] => 
            [mode] => 
            [type] => browser
            [alias] => 
        )

[coveralls]

Coverage remained the same at 100.0% when pulling 7657e74 on ayumi-cloud:Maple into 4899110 on WhichBrowser:master.

[NielsLeenheer]

I'll check what is going wrong with the rebase. I probably have some time later today.