Rename gem name (#3)

We decide to rename this gem so that the name could indicate appropreate
behavior.
We expect this gem will behave like IO-related gems, so the name
includes 'input.'
This gem includes input of remote data but doesn't include any output.
Thus the name includes only 'input', not 'IO.'

Author: Yuritani2000

red-datastock.gemspec renamed to red-remote-input.gemspec

@@ -7,7 +7,7 @@ end
 require_relative "lib/datastock/version"
 
 Gem::Specification.new do |spec|
-  spec.name = "red-datastock"
+  spec.name = "red-remote-input"
   spec.version = DataStock::VERSION
   spec.homepage = "https://github.com/red-data-tools/red-datastock"
   spec.authors = ["Kouhei Sutou"]