Update README.md

nginx/file database access permissions added.
Merge pull request #1 from bidochko/patch-1

Update README.md
Trailing whitespace cleanup
README: NginxLocation -> InternalLocation fix
README: document httpd integration as part of the setup process
Split API into "core" submodule, use __init__.py only for imports
tests: +TestClientInit
tests: split ClientInit tests into several suites
tests: initial tests for client querying
tests: tests for Put* operations
tests: added tests for Temp* stuff
tests: last batch of tests for temporary files
tests: added test for convert_resize
Allow comment lines to begin with whitespace in FileStruct.json; improved errors;