Compile errors fix

Encasing webserver 2 functions in alexa if definition for code to compile

Adding mDNS ability to the webserver to avoid looking for the ip

Changing Index based selection on solid color pattern for name based …

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/wiring.jpg -- 772.37kb -> 616.97kb (20.12%)

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Added contributors badge

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Improvement suggestions for Readme

See also https://github.com/NimmLor/esp8266-nanoleaf-webserver/issues/2

*Total -- 7,957.99kb -> 7,502.62kb (5.72%)

/gallery/NodeRED_UI/patternlist.png -- 9.91kb -> 4.91kb (50.42%)
/gallery/NodeRED_UI/import.png -- 19.38kb -> 10.24kb (47.15%)
/gallery/NodeRED_UI/config_1.png -- 7.23kb -> 3.97kb (45.12%)
/data/images/atom196.png -- 5.34kb -> 3.80kb (28.89%)
/gallery/NodeRED_UI/config_2.png -- 17.41kb -> 13.58kb (21.95%)
/gallery/NodeRED_UI/autoplay_and_parameters.png -- 10.76kb -> 8.46kb (21.39%)
/gallery/NodeRED_UI/device_config.png -- 130.35kb -> 103.98kb (20.23%)
/gallery/circuit.jpg -- 190.05kb -> 151.70kb (20.18%)
/gallery/NodeRED_UI/device_1.png -- 45.94kb -> 36.81kb (19.87%)
/gallery/circuit_logic_level_Steckplatine.jpg -- 236.06kb -> 189.40kb (19.77%)
/gallery/NodeRED_UI/conf_1.png -- 9.58kb -> 7.90kb (17.54%)
/gallery/NodeRED_UI/full.png -- 147.04kb -> 124.36kb (15.42%)
/gallery/NodeRED_UI/nanoleaf_designer.png -- 55.27kb -> 46.84kb (15.26%)
/gallery/NodeRED_UI/main.png -- 7.42kb -> 6.29kb (15.23%)
/gallery/NodeRED_UI/nanoleaf_designer_2.png -- 55.67kb -> 47.42kb (14.82%)
/gallery/NodeRED_UI/device_4.png -- 72.50kb -> 62.14kb (14.3%)
/gallery/NodeRED_UI/device_3.png -- 19.22kb -> 16.58kb (13.75%)
/gallery/NodeRED_UI/pattern_designer.png -- 74.35kb -> 64.36kb (13.45%)
/gallery/NodeRED_UI/pattern_designer_2.png -- 70.64kb -> 63.03kb (10.78%)
/gallery/NodeRED_UI/patterns.png -- 22.21kb -> 20.52kb (7.62%)
/gallery/electronics_box_level_shift.jpg -- 3,206.28kb -> 3,090.53kb (3.61%)
/gallery/electronics_box.jpg -- 2,987.81kb -> 2,882.51kb (3.52%)
/gallery/interface.jpg -- 313.51kb -> 303.05kb (3.34%)
/data/fonts/glyphicons.svg -- 106.19kb -> 103.92kb (2.14%)
/gallery/NodeRED_UI/device_2.png -- 106.20kb -> 104.90kb (1.22%)
/gallery/NodeRED_UI/alexa_skill.png -- 31.66kb -> 31.43kb (0.72%)

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hostname configuration is now set before wifi starts

Add hostname to wifi non-ap mode