Book crawler from site publicbooks.org using RSS feed

(Now run fast by concurrently encode JSON to each file in ./json folder)

Name		Name	Last commit message	Last commit date
Latest commit History 10 Commits
app		app
json		json
src		src
test		test
.ghci		.ghci
.gitignore		.gitignore
ChangeLog.md		ChangeLog.md
LICENSE		LICENSE
README.md		README.md
Setup.hs		Setup.hs
crawler1.cabal		crawler1.cabal
package.yaml		package.yaml
stack.yaml		stack.yaml
stack.yaml.lock		stack.yaml.lock