Framework#stats: fixed typo causing the sitemap size to always be 0
Merge branch 'release/v0.4.2' into experimental
Brought experimental branch back to 1.0dev
Updated to pull arachni-rpc-em from its GitHub branch.
Added RPC::Server::Dispatcher::Node#grid_member?
Grid Dispatchers now automatically load-balance scans

#dispatch call returns an Instance from the least burdened Grid member by default.
Removed leftover comment
Removed the fork link
README: Made working with source instructions clearer
README: Updated contributing instructions
README: Updated contribution instructions
specs: Moved supporting objects under support/

[Task #5275791205543]
Added URI#ip_address?, determining if a URI contains an IP address or not.
Parser spec: added more tests for #extract_domain
Dispatcher: slight cleanup
Added RPC::Server::Instance#consumed_pids for debugging.
Utilities#generate_token: updated random max to 9999
Added Hash #stringify_keys and #symbolize_keys.
Added process helpers for RPC Instance and Dispatcher servers.

[Task #5275791205543]

Also, updated RSpec tests to use them and removed duplicate code.
RPC::Framework::Distributor: code style fix