Add link to slack group to readme
Add link to slack group to readme

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expa/dokku,econya/dokku,Evlos/dokku,progrium/dokku,Evlos/dokku,econya/dokku,amaltson/dokku,amaltson/dokku,claytonbrown/dokku,expa/dokku,dokku/dokku,alexquick/dokku,dokku/dokku,alexquick/dokku,alexquick/dokku,jimjag/dokku,Evlos/dokku,codeconfab/dokku,amaltson/dokku,jimjag/dokku,dokku/dokku,progrium/dokku,econya/dokku,expa/dokku,johnfraney/dokku,codeconfab/dokku,sseemayer/dokku,elia/dokku,elia/dokku,jimjag/dokku,sseemayer/dokku,elia/dokku,progrium/dokku,elia/dokku,amaltson/dokku,johnfraney/dokku,dokku/dokku,johnfraney/dokku,Evlos/dokku,dokku/dokku,claytonbrown/dokku,dokku/dokku,fruitl00p/dokku,progrium/dokku,sseemayer/dokku,expa/dokku,econya/dokku,johnfraney/dokku,sseemayer/dokku,claytonbrown/dokku,Evlos/dokku,codeconfab/dokku,fruitl00p/dokku,progrium/dokku,johnfraney/dokku,Evlos/dokku,dokku/dokku,econya/dokku,econya/dokku,econya/dokku,johnfraney/dokku,jimjag/dokku,alexquick/dokku,progrium/dokku,elia/dokku,jimjag/dokku,johnfraney/dokku,claytonbrown/dokku,sseemayer/dokku,jimjag/dokku,codeconfab/dokku,expa/dokku,dokku/dokku,alexquick/dokku,elia/dokku,alexquick/dokku,codeconfab/dokku,expa/dokku,expa/dokku,claytonbrown/dokku,expa/dokku,elia/dokku,fruitl00p/dokku,fruitl00p/dokku,amaltson/dokku,johnfraney/dokku,claytonbrown/dokku,fruitl00p/dokku,fruitl00p/dokku,sseemayer/dokku,elia/dokku,econya/dokku,jimjag/dokku,amaltson/dokku,alexquick/dokku,Evlos/dokku,claytonbrown/dokku,claytonbrown/dokku,fruitl00p/dokku,codeconfab/dokku,sseemayer/dokku,amaltson/dokku,Evlos/dokku,codeconfab/dokku,progrium/dokku,sseemayer/dokku,alexquick/dokku,progrium/dokku,codeconfab/dokku,amaltson/dokku,fruitl00p/dokku,jimjag/dokku