Replace the cd command with the pwd option. (#85)

Author: gucong3000

lib/codecov.js

@@ -283,7 +283,7 @@ var upload = function(args, on_success, on_failure){
   // List git files
   var root = path.resolve(args.options.root || query.root || '.');
   console.log('==> Building file structure');
-  upload += execSync('cd '+root+' && git ls-files || hg locate').toString().trim() + '\n<<<<<< network\n';
+  upload += execSync('git ls-files || hg locate', { cwd: root }).toString().trim() + '\n<<<<<< network\n';
 
   // Make gcov reports
   if ((args.options.disable || '').split(',').indexOf('gcov') === -1) {
@@ -318,9 +318,9 @@ var upload = function(args, on_success, on_failure){
   // Detect .bowerrc
   var bowerrc;
   if(!isWindows) {
-    bowerrc = execSync('cd '+root+' && test -f .bowerrc && cat .bowerrc || echo ""').toString().trim();
+    bowerrc = execSync('test -f .bowerrc && cat .bowerrc || echo ""', { cwd: root }).toString().trim();
   } else {
-    bowerrc = execSync('cd '+root+' && if exist .bowerrc type .bowerrc').toString().trim();
+    bowerrc = execSync('if exist .bowerrc type .bowerrc', { cwd: root }).toString().trim();
   }
   if (bowerrc) {
     bowerrc = JSON.parse(bowerrc).directory;