Restructure configuration

[GaryJones]

The usual approach to configurations is to use the options object, as this can be set for all targets, and then optionally overridden in specific targets. i.e. given:

// https://github.com/RealFaviconGenerator/grunt-real-favicon
real_favicon: {
    favicons: {
        src: '<%= paths.authorAssets %>images/dt-logo-circle.png',
        dest: '<%= paths.authorAssets %>images/favicons-generated/',
        html: [],
        design: {
            ios: {
                picture_aspect: 'no_change'
            },
            windows: {
                picture_aspect: 'no_change',
                background_color: '#2b5797' // One of the recommended Windows UI colors
            }
        },
        settings: {
            compression: 2
        }
    }
};

I'd expect it to be more like:

real_favicon: {
    options: {
        html: [],
        ios: {
            picture_aspect: 'no_change'
        },
        windows: {
            picture_aspect: 'no_change',
            background_color: '#2b5797' // One of the recommended Windows UI colors
        },
        compression: 2
    },
    favicons: {
        src: '<%= paths.authorAssets %>images/dt-logo-circle.png',
        dest: '<%= paths.authorAssets %>images/favicons-generated/',
    }
};

...which would then allow easier overriding, such as:

real_favicon: {
    options: {
        html: [],
        ios: {
            picture_aspect: 'no_change'
        },
        windows: {
            picture_aspect: 'no_change',
            background_color: '#2b5797' // One of the recommended Windows UI colors
        },
        compression: 2
    },
    theme1: {
        src: '<%= paths.authorAssets %>images/dt-logo-circle.png',
        dest: '<%= paths.authorAssets %>images/favicons-theme1/',
    },
    theme2: {
        options: {
            windows: {
                background_color: '#000000'
            }
        },
        src: '<%= paths.authorAssets %>images/dt-logo-circle.png',
        dest: '<%= paths.authorAssets %>images/favicons-theme2/',
    }
};

I realise this is going to be backwards-incompatible, but it would bring it more inline with how the majority of Grunt tasks are written.

[phbernard]

My Grunt newbieness is revealed :)

Makes sense. The plugin is in its infancy. I don't consider incompatibility is a problem at this stage.

[phbernard]

Done, will be part of v0.1.0