update README with leaflet-velocity notice

bugfix honour options.overlayName, fallback to wind

rm wind-js-helper reference from gulpfile

rm superflous logging

rm superflous logging

fix typo preventing overlay destroy on deselect

restore L.Control.WindPosition reference to WindJSLeaflet

leaflet compatibility update to v1.0.3 using gLayers.Leaflet

combine WindJSLeaflet with Helper, better separation of public private functions

fix npm main file

support CommonJS module loading, other minor fixes

push dist

fix incorrect wind speed displayed in L.Control.WindPosition.js

npm v0.0.4

format README