Add check runtime dependences, fix readme and yandex.gemspec

README.md

@@ -1,27 +1,36 @@
 Yadisk
 ======
 
-Tool for download
-
+Command line tool for download file from Yandex.Disk through share link
 
 ## Install
 
 ```
-gem install yadisk
+$ gem install yadisk
 ```
 
 For development:
 
 ```
-gem install --dev yadisk
+$ gem install --dev yadisk
+```
+
+## How use
+
+```
+# Save to current directory
+$ yadisk https://yadi.sk/i/UFD
+
+# Save to other directory
+$ yadisk https://yadi.sk/i/UFD /path/to/directory
 ```
 
 ## Test
 
 For run test use:
 
 ```
-rspec
+$ rspec
 ```
 
 ## Contribution

bin/yadisk

@@ -1,3 +1,8 @@
 #!/usr/bin/env ruby
 
 # handle ARGV, and execute Yadisk::Main class
+
+require 'yadisk'
+require 'yadisk/check_runtime'
+
+Yadisk::CheckRuntime.check_wget

lib/yadisk/check_runtime.rb

@@ -0,0 +1,14 @@
+require "io/console"
+
+module Yadisk
+  class CheckRuntime
+    def self.check_wget
+      output = IO.popen("which wget").read
+      if output.empty?
+        puts "Please install wget or add it to 'PATH' and try again\n"
+        abort
+      end
+    end
+  end
+end
+

yadisk.gemspec

@@ -5,15 +5,16 @@ require_relative 'lib/yadisk/version'
 
 Gem::Specification.new do |s|
   s.name = 'yadisk'
-  s.version = Yadisk::VERSION # '0.0.1'
+  s.version = Yadisk::VERSION
   s.date = '2018-01-25'
   s.summary = "Download file from Yandex.Disk through share link"
   s.description = "Command line tool for download file from Yandex.Disk through share link"
   s.author = "Artem Yegorov"
   s.email = '[email protected]'
-  s.files = ["lib/yadisk.rb", "lib/yadisk/version.rb"]
+  s.files = ["lib/yadisk.rb", "lib/yadisk/check_runtime.rb", "lib/yadisk/version.rb"]
+  s.platform = Gem::Platform::RUBY
   s.executables << 'yadisk'
-  s.add_development_dependency 'rspec', '~> 3.7.0'
+  s.add_development_dependency 'rspec', ['~> 3.7.0', '< 4.0']
   s.homepage = 'https://github.com/yegorov/yadisk'
   s.license = 'MIT'
 end