Blog API example (#377)

examples/apps/blog/README.md

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+# Blog API in 10 minutes
+
+This is a simple blog API with a function to receive a list of posts and a function to create a post.
+
+## Run it
+
+```
+# Start MySQL:
+docker run --name mysql --net=host -p 3306:3306 -e MYSQL_ROOT_PASSWORD=pass -d mysql:8
+docker run -it --rm --link mysql:mysql mysql mysql -ppass -hmysql -e "create database blog"
+docker run -it --rm --link mysql:mysql mysql mysql -ppass -hmysql -e "show databases"
+
+# create schema
+fn run -e DB_USER=root -e DB_PASS=pass schema
+
+# Test locally:
+# Check if any posts, should be none
+fn run -e DB_USER=root -e DB_PASS=pass posts
+# Add one
+cat post.json | fn run -e DB_USER=root -e DB_PASS=pass posts/create
+# Check again
+fn run -e DB_USER=root -e DB_PASS=pass posts
+
+# Set app configs
+fn apps config set blog DB_USER root
+fn apps config set blog DB_PASS pass
+
+# fn deploy it!
+fn deploy --all
+```
+
+## TODO:
+
+* [ ] Add some way to ignore funcs on deploy, ie: schema