Update README
Update README

Mention the license is MIT.
Add Ray to maths types.
Remove the word "basic" from mesh support feature.
Fix up some new lines.

sh4wn/vispy,sbtlaarzc/vispy,inclement/vispy,RebeccaWPerry/vispy,ghisvail/vispy,RebeccaWPerry/vispy,bollu/vispy,michaelaye/vispy,julienr/vispy,jdreaver/vispy,jdreaver/vispy,drufat/vispy,julienr/vispy,kkuunnddaannkk/vispy,srinathv/vispy,inclement/vispy,QuLogic/vispy,Eric89GXL/vispy,hronoses/vispy,sh4wn/vispy,hronoses/vispy,inclement/vispy,QuLogic/vispy,kkuunnddaannkk/vispy,jdreaver/vispy,jay3sh/vispy,drufat/vispy,hronoses/vispy,ghisvail/vispy,michaelaye/vispy,jay3sh/vispy,julienr/vispy,QuLogic/vispy,bollu/vispy,Eric89GXL/vispy,sbtlaarzc/vispy,jay3sh/vispy,RebeccaWPerry/vispy,srinathv/vispy,sbtlaarzc/vispy,bollu/vispy,drufat/vispy,dchilds7/Deysha-Star-Formation,Eric89GXL/vispy,dchilds7/Deysha-Star-Formation,srinathv/vispy,kkuunnddaannkk/vispy,ghisvail/vispy,dchilds7/Deysha-Star-Formation,sh4wn/vispy,michaelaye/vispy