Merge pull request nodegit#951 from 'Gum-Joe/fix-install-issue-username-space-windows'

Put the path to node-pre-gyp in quotes in install.js

Author: John Haley

lifecycleScripts/install.js

@@ -36,7 +36,7 @@ return installPrebuilt();
 function installPrebuilt() {
   console.info("[nodegit] Fetching binary from S3.");
   var npg = pathForTool("node-pre-gyp");
-  return exec(npg + " install --fallback-to-build=false")
+  return exec("\""+ npg + "\" install --fallback-to-build=false")
     .then(
       function() {
         console.info("[nodegit] Completed installation successfully.");