Clarify README to explain that Accessible Blockly can now be used with most screen readers and browsers.
Clarify README to explain that Accessible Blockly can now be used with most screen readers and browsers.

trodi/blockly,mark-friedman/blockly,picklesrus/blockly,google/blockly,gengshenghong/scratch-blocks,jstnhuang/blockly,nickmain/blockly,sclements/scratch-blocks,rachel-fenichel/blockly,lzairdking/blockly,sclements/scratch-blocks,dhalupa/blockly,mark-friedman/blockly,LLK/scratch-blocks,google/blockly,trinketapp/blockly,lzairdking/blockly,mark-friedman/blockly,groklearning/blockly,markocelan/blockly-minecraft,twodee/blockly,carlosperate/blockly,nickmain/blockly,InspectorWidget/blockly,nickmain/blockly,google/blockly,hkoi/blockly,aravart/speech-blocks,carlosperate/blockly,LLK/scratch-blocks,jano42/blockly,gengshenghong/scratch-blocks,griffpatch/scratch-blocks,jstnhuang/blockly,groklearning/blockly,sclements/scratch-blocks,lzairdking/blockly,google/blockly-devtools,twodee/blockly,InspectorWidget/blockly,groklearning/blockly,picklesrus/blockly,joshlory/blockly,jano42/blockly,rachel-fenichel/blockly,twodee/blockly,rachel-fenichel/blockly,daarond/blockly,picklesrus/blockly,jano42/blockly,google/blockly,rachel-fenichel/blockly,mark-friedman/blockly,sclements/scratch-blocks,LLK/scratch-blocks,nickmain/blockly,InspectorWidget/blockly,mark-friedman/blockly,dhalupa/blockly,rachel-fenichel/blockly,rachel-fenichel/blockly,jstnhuang/blockly,carlosperate/blockly,rachel-fenichel/blockly,google/blockly-devtools,sclements/scratch-blocks,griffpatch/scratch-blocks,trinketapp/blockly,google/blockly,gengshenghong/scratch-blocks,griffpatch/scratch-blocks,trodi/blockly,markocelan/blockly-minecraft,trodi/blockly,joshlory/blockly,twodee/blockly,markocelan/blockly-minecraft,nickmain/blockly,twodee/blockly,trinketapp/blockly,carlosperate/blockly,lzairdking/blockly,hkoi/blockly,trodi/blockly,aravart/speech-blocks,gengshenghong/scratch-blocks,twodee/blockly,daarond/blockly,daarond/blockly,groklearning/blockly,LLK/scratch-blocks,griffpatch/scratch-blocks,jano42/blockly,nickmain/blockly,gengshenghong/scratch-blocks,LLK/scratch-blocks,hkoi/blockly,dhalupa/blockly,joshlory/blockly,google/blockly,google/blockly,markocelan/blockly-minecraft,trinketapp/blockly,griffpatch/scratch-blocks,jstnhuang/blockly,mark-friedman/blockly