remove docs submodule. Changed my mind about including this as a submodule, it's already linked to from README.md and the submodule risks not getting updated to the latest commit.
remove docs submodule. Changed my mind about including this as a submodule, it's already linked to from README.md and the submodule risks not getting updated to the latest commit.

citation-style-editor/csl-editor,adam3smith/csl-editor,fbennett/csl-editor,adam3smith/csl-editor,adam3smith/csl-editor,citation-style-language/csl-editor,citation-style-editor/csl-editor,citation-style-language/csl-editor,fbennett/csl-editor,citation-style-editor/csl-editor,citation-style-language/csl-editor