Implemented find_symbol function Close #22

      return this.pointToLayerFunction.bind(this, indexOrName);

   },

   find_symbol: function() {

   find_symbol: function( svgRequest ) {

      // Declare variable to hold svg contents

      var svgText;

      const svgFileList = require.context(

         './images/FGDC_svgs/', true, /\.svg$/

      ); // Load all files in listed folder and all sub directories

      // Dynamically load modules of svgs in plaintext

      const svgFiles = require.context(

         '!url-loader?encoding=ascii!./images/FGDC_svgs/', true, /\.svg$/

      );

      console.log(svgFileList); // Testing: Print to console

      // Loop through loaded files

      svgFiles.keys().forEach( (svgKey) => {

      const svgFileKeys = svgFileList.keys();  // Set varaible to 'key' containing all file paths and names

      for( let index = 0; index < svgFileKeys.length; index++ ) // Loop through all file names listed in key

      {

         var svgFileName = svgFileKeys[ index ]; // Set variable name to file path at current index

         if( svgFileName.split(/[\\/]/).pop() == '25.82.svg') // Isolate file name from the file's path and compare to search criteria

         // Check if key matches requested svg name

         if( svgKey.split("/").pop() == svgRequest )

         {

            var svgFile = svgFileKeys[ index ]; // Set file variable to path of matching file

            console.log(svgFile); // Testing: Print to console

         }

         // Add else statement to handle situations where a file isn't located

            // Assign value of svg module

            svgText = svgFiles(svgKey);

         }

      })

      // Figure out how to grab the contents of the located file. 

         // Issue: browser security features generally prevent local file access

      // Return contents of svg

      return svgText.default;

   },

   symbolize_with_icons: function(geolayer, map){

      var svgElementBounds = null;

      var svgElement = null;

      symbol = '<g> <path inkscape:connector-curvature="0" id="path3055" d="M 0.43864824,0.43865001 7.3370882,9.83709" style="fill:none;stroke:#000000;stroke-width:0.87730002;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:10;stroke-opacity:1" /> <path inkscape:connector-curvature="0" id="path3057" d="M 7.3370882,0.43865001 0.43864824,9.83709" style="fill:none;stroke:#000000;stroke-width:0.87730002;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:10;stroke-opacity:1" / </g>';

      svgElement = document.createElementNS("http://www.w3.org/2000/svg", "svg");

      svgElement.setAttribute('xmlns', "http://www.w3.org/2000/svg");

      svgElement.innerHTML = symbol;

      svgElement.innerHTML = this.find_symbol('strike_slip_fault_arrows_r.svg');

      svgElementBounds = [ [ point.y - 0.05, point.x + 0.05 ], [ point.y , point.x ] ];

      const addedSymbol = L.svgOverlay(svgElement, svgElementBounds).addTo(map);