add popularity report for these tools
diff --git a/PackageManagementTools.md b/PackageManagementTools.md
index 2d94c36..3ed95a0 100644
--- a/PackageManagementTools.md
+++ b/PackageManagementTools.md
@@ -1,5 +1,7 @@
This page contains a list of tools for managing Go packages and their dependencies (vendoring). The tools are divided into categories based on their approach to version management.
+To see popularity of these tools, click [here](https://github.com/blindpirate/report-of-go-package-management-tool).
+
## GO15VENDOREXPERIMENT
As of [June 19th, 2015](https://groups.google.com/d/msg/golang-dev/74zjMON9glU/EOKSoaL5p8wJ), the Go toolchain includes an experimental vendoring flag, `GO15VENDOREXPERIMENT`. This is now part of the Go 1.5 release and represents the Go team's recommended approach to vendoring dependencies. You can read more about how this environment variable works in the [Go 1.5 documentation](https://golang.org/cmd/go/#hdr-Vendor_Directories) and the [original design document](https://docs.google.com/document/d/1Bz5-UB7g2uPBdOx-rw5t9MxJwkfpx90cqG9AFL0JAYo/view). For a more detailed explanation, check out [this post](https://medium.com/@freeformz/go-1-5-s-vendor-experiment-fd3e830f52c3) by [@freeformz](https://twitter.com/freeformz) or [this short explainer](http://engineeredweb.com/blog/2015/go-1.5-vendor-handling/) from Engineered Web.
