Fix missing method (SpartnerNL#1049)

Share method will be removed as of Laravel 5.4

laravel/framework@1a1969b#diff-52441e04e14c52275cd5d09e8f958981L300

Author: micaelpdias

src/Maatwebsite/Excel/ExcelServiceProvider.php

@@ -84,7 +84,7 @@ protected function bindPHPExcelClass()
         $me = $this;
 
         // Bind the PHPExcel class
-        $this->app['phpexcel'] = $this->app->share(function () use ($me)
+        $this->app->singleton('phpexcel', function () use ($me)
         {
             // Set locale
             $me->setLocale();
@@ -105,7 +105,7 @@ protected function bindPHPExcelClass()
     protected function bindCssParser()
     {
         // Bind css parser
-        $this->app['excel.parsers.css'] = $this->app->share(function ()
+        $this->app->singleton('excel.parsers.css', function ()
         {
             return new CssParser(
                 new CssToInlineStyles()
@@ -120,7 +120,7 @@ protected function bindCssParser()
     protected function bindReaders()
     {
         // Bind the laravel excel reader
-        $this->app['excel.reader'] = $this->app->share(function ($app)
+        $this->app->singleton('excel.reader', function ($app)
         {
             return new LaravelExcelReader(
                 $app['files'],
@@ -130,7 +130,7 @@ protected function bindReaders()
         });
 
         // Bind the html reader class
-        $this->app['excel.readers.html'] = $this->app->share(function ($app)
+        $this->app->singleton('excel.readers.html', function ($app)
         {
             return new Html(
                 $app['excel.parsers.css']
@@ -145,7 +145,7 @@ protected function bindReaders()
     protected function bindParsers()
     {
         // Bind the view parser
-        $this->app['excel.parsers.view'] = $this->app->share(function ($app)
+        $this->app->singleton('excel.parsers.view', function ($app)
         {
             return new ViewParser(
                 $app['excel.readers.html']
@@ -160,7 +160,7 @@ protected function bindParsers()
     protected function bindWriters()
     {
         // Bind the excel writer
-        $this->app['excel.writer'] = $this->app->share(function ($app)
+        $this->app->singleton('excel.writer', function ($app)
         {
             return new LaravelExcelWriter(
                 $app->make(Response::class),
@@ -177,7 +177,7 @@ protected function bindWriters()
     protected function bindExcel()
     {
         // Bind the Excel class and inject its dependencies
-        $this->app['excel'] = $this->app->share(function ($app)
+        $this->app->singleton('excel', function ($app)
         {
             $excel = new Excel(
                 $app['phpexcel'],
@@ -201,7 +201,7 @@ protected function bindExcel()
     protected function bindClasses()
     {
         // Bind the format identifier
-        $this->app['excel.identifier'] = $this->app->share(function ($app)
+        $this->app->singleton('excel.identifier', function ($app)
         {
             return new FormatIdentifier($app['files']);
         });