若干后端代码改进

.gitignore

@@ -60,3 +60,6 @@ permdir/
 node_modules/
 package-lock.json
 data
+
+.idea/
+.vscode/

README.md

@@ -1,34 +1,40 @@
-# R
-
-Upload file service with react. It's [P](https://github.com/qingfeng/p)'s (react + es6+) version
-
-Douban Intra Service http://r.dapps.douban.com/
-
-# Demo
-
-The [R Demo](https://vast-brushlands-4477.herokuapp.com) showcases `r`.
-
-# Get Started
-
-```shell
-git clone https://github.com/dongweiming/r
-cd r
-virtualenv venv
-source venv/bin/activate
-pip install -r requirements.txt
-mkdir permdir
-./setup_databases.sh
-python app.py
-open http://localhost:5000
-```
-
-# Command Line
-
-Example:
-
-* Command line: ``curl -F file=@"/tmp/1.png" http://p.dapps.douban.com/``
-* Command line: ``curl -F file=@"/tmp/1.png" -F w=100 -F h=100 http://p.dapps.douban.com/``
-* Resize image: ``http://p.dapps.douban.com/r/img_hash.jpg?w=300&h=200``
-* Affine Transformation:
-  ``http://p.dapps.douban.com/a/img_hash.jpg?w=300&h=300&a=0.86,0.5,-100,-0.5,0.86,50``
-  (Rotate 30 degree clockwise and then translation 100 right, 50 up.)
+# R
+
+Upload file service with react. It's [P](https://github.com/qingfeng/p)'s (react + es6+) version
+
+Douban Intra Service http://r.dapps.douban.com/
+
+# Demo
+
+The [R Demo](https://vast-brushlands-4477.herokuapp.com) showcases `r`.
+
+# Get Started
+
+```shell
+git clone https://github.com/dongweiming/r
+cd r
+virtualenv -p python3 venv
+source venv/bin/activate
+pip install -r requirements.txt
+mkdir permdir
+./setup_databases.sh
+python app.py
+open http://localhost:5000
+```
+
+# Command Line
+
+Example:
+
+- Command line: `curl -F file=@"/tmp/1.png" http://p.dapps.douban.com/`
+- Command line: `curl -F file=@"/tmp/1.png" -F w=100 -F h=100 http://p.dapps.douban.com/`
+- Resize image: `http://p.dapps.douban.com/r/img_hash.jpg?w=300&h=200`
+- Affine Transformation:
+  `http://p.dapps.douban.com/a/img_hash.jpg?w=300&h=300&a=0.86,0.5,-100,-0.5,0.86,50`
+  (Rotate 30 degree clockwise and then translation 100 right, 50 up.)
+
+# FAQ
+
+## Problems importing magic on Windows 64-bit
+
+Drop the [dlls](https://github.com/pidydx/libmagicwin64) to `C:\Windows\System32` and python magic will import correctly.