the python@2 and pip environment upgrade

Author: DovSnier

Temp/debug/README.md

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+# README
+
+## 说明
+
+1. python@2.rb
+
+```bash
+# the install python@2 script
+python@2.rb
+```
+
+2. get-pip.py
+
+```bash
+# the upgrade pip script
+get-pip.py
+```