Merge pull request #2 from DrMarcII/master

Fix warnings.
Merge pull request #3 from DrMarcII/master

Fix warnings.
Merge pull request #4 from DrMarcII/master

Remove deprecated annotation.
Documentation - migrate PageLoaderManual to markdown so it can be nicely
displayed on GitHub.
Merge pull request #5 from juliemr/docs

Documentation - migrate PageLoaderManual to markdown so it can be nicely
Merge branch 'master' of https://github.com/google/pageloader