Adds blocks

ScratchJSBlocks.js

(function(ext) {
    ext._shutdown = function() {
    };
   
    ext._getStatus = function() {
        return {status: 2, msg: 'Installed and Ready'};
    };
   
    var descriptor = {
        blocks: [
                        ['r', 'PI', 'retPi'],
                        ['', 'Alert %s', 'alerter', ''],
                        ['', 'Eval %s', 'evaler', ''],
                        ['', 'Log %s to console', 'logger', ''],
                        ['', 'Load blocks from %s URL', 'loadblocker', ''],
        ]
    };
    ext.retPi = function() {
        return Math.PI;
    };
 
        ext.alerter = function(alerttext) {
        alert(alerttext);
    };
        ext.evaler = function(evaltext) {
        eval(evaltext);
    };
        ext.logger = function(logtext) {
        console.log(logtext);
    };
        ext.loadblocker = function(loadtext) {
       ScratchExtensions.loadExternalJS(loadtext);
    };
    ScratchExtensions.register("JavaScript Blocks v1", descriptor, ext);
})({});