Added visualisations for electricity emissions

Use npm run build to bundle the react components and then open localhost:3080. #14 (closed)

api/v1/frontend-scripts/electricity.js

+var country_code = require('../../../raw_data/countrycode.json');
+var electricity = require('../../../raw_data/electricty_emission.json')
+// console.log(country_code);
+let findcode = (country) => {
+  for(cs in country_code)
+  {
+    if(country_code[cs].name == country)
+    {
+      return country_code[cs].code;
+    }    
+  }  
+}
+var obj={};
+for (js in electricity){
+  if (findcode(electricity[js]['Country'])){
+    obj[findcode(electricity[js]['Country'])]=
+              {"name":electricity[js]['Country'],
+              "CO2":electricity[js]['Consum-CO2'],
+              "CH4":electricity[js]['Consum-CH4'],
+              "N2O":electricity[js]['Consum-N2O'],
+              "unit":"kg/kWh"
+            };
+  }
+}
+jsonStr = JSON.stringify(obj);
+console.log(jsonStr);
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