Merge branch 'release/0.6.0' into develop
Fix type mistakes
Update Makefile to create EDoc
Fix Makefile
Merge pull request #5 from egisatoshi/develop

Fix type mistakes
leo_pod:child_spc -> leo_pod:start_link
Add specs
Remove leo_pod_app.erl
Fix src/leo_pod.app.src
Update comments
Fix README.md
Merge pull request #6 from egisatoshi/develop

Refactor
Insert spec of functions at leo_pod_manager
Fix wrong spec of functions at leo_pod
Optimize codes
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Support dialyzer
Optimize code
Add callgraph option and modify dialyzer-related options
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