Update gems and any Ruby 2.6.x version

Gemfile

@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby '2.6.3'
+ruby '~> 2.6.0'
 
 gem 'rake'
 gem 'thor'
@@ -9,6 +9,7 @@ gem 'yajl-ruby', require: false
 gem 'html-pipeline'
 gem 'typhoeus'
 gem 'nokogiri'
+gem 'terminal-table'
 
 group :app do
   gem 'rack'
@@ -26,7 +27,6 @@ group :app do
   gem 'sprockets-sass'
   gem 'image_optim'
   gem 'image_optim_pack', platforms: :ruby
-  gem 'terminal-table'
 end
 
 group :production do
@@ -43,7 +43,6 @@ group :docs do
   gem 'unix_utils', require: false
   gem 'tty-pager', require: false
   gem 'net-sftp', '>= 2.1.3.rc2', require: false
-  gem 'terminal-table', require: false
 end
 
 group :test do

Gemfile.lock

@@ -20,7 +20,7 @@ GEM
     coffee-script-source (1.12.2)
     concurrent-ruby (1.1.5)
     daemons (1.3.1)
-    erubi (1.8.0)
+    erubi (1.9.0)
     ethon (0.12.0)
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
@@ -28,11 +28,11 @@ GEM
     exifr (1.3.6)
     ffi (1.11.1)
     fspath (3.1.2)
-    highline (2.0.2)
-    html-pipeline (2.11.1)
+    highline (2.0.3)
+    html-pipeline (2.12.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
-    i18n (1.6.0)
+    i18n (1.7.0)
       concurrent-ruby (~> 1.0)
     image_optim (0.26.5)
       exifr (~> 1.2, >= 1.2.2)
@@ -40,21 +40,21 @@ GEM
       image_size (>= 1.5, < 3)
       in_threads (~> 1.3)
       progress (~> 3.0, >= 3.0.1)
-    image_optim_pack (0.5.6)
+    image_optim_pack (0.6.0)
       fspath (>= 2.1, < 4)
       image_optim (~> 0.19)
     image_size (2.0.2)
     in_threads (1.5.3)
     method_source (0.9.2)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.12.2)
     multi_json (1.13.1)
     mustermann (1.0.3)
     net-sftp (3.0.0.beta1)
       net-ssh (>= 5.0.0, < 6.0.0)
     net-ssh (5.2.0)
-    newrelic_rpm (6.5.0.357)
-    nokogiri (1.10.3)
+    newrelic_rpm (6.7.0.359)
+    nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     options (2.3.2)
     progress (3.5.2)
@@ -65,12 +65,12 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     rack (2.0.7)
-    rack-protection (2.0.5)
+    rack-protection (2.0.7)
       rack
     rack-ssl-enforcer (0.2.9)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rake (12.3.2)
+    rake (13.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
@@ -80,18 +80,18 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sinatra (2.0.5)
+    sinatra (2.0.7)
       mustermann (~> 1.0)
       rack (~> 2.0)
-      rack-protection (= 2.0.5)
+      rack-protection (= 2.0.7)
       tilt (~> 2.0)
-    sinatra-contrib (2.0.5)
+    sinatra-contrib (2.0.7)
       backports (>= 2.8.2)
       multi_json
       mustermann (~> 1.0)
-      rack-protection (= 2.0.5)
-      sinatra (= 2.0.5)
-      tilt (>= 1.3, < 3)
+      rack-protection (= 2.0.7)
+      sinatra (= 2.0.7)
+      tilt (~> 2.0)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -99,7 +99,7 @@ GEM
       sprockets (>= 2.2)
     sprockets-sass (2.0.0.beta2)
       sprockets (>= 2.0, < 4.0)
-    strings (0.1.5)
+    strings (0.1.6)
       strings-ansi (~> 0.1)
       unicode-display_width (~> 1.5)
       unicode_utils (~> 1.4)
@@ -112,7 +112,7 @@ GEM
       rack (>= 1, < 3)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.9)
+    tilt (2.0.10)
     tty-pager (0.12.1)
       strings (~> 0.1.4)
       tty-screen (~> 0.6)
@@ -123,7 +123,7 @@ GEM
       ethon (>= 0.9.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (4.1.20)
+    uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
     unicode-display_width (1.6.0)
     unicode_utils (1.4.0)

README.md

@@ -18,7 +18,7 @@ Unless you wish to contribute to the project, we recommend using the hosted vers
 
 DevDocs is made of two pieces: a Ruby scraper that generates the documentation and metadata, and a JavaScript app powered by a small Sinatra app.
 
-DevDocs requires Ruby 2.6.3, libcurl, and a JavaScript runtime supported by [ExecJS](https://github.com/rails/execjs#readme) (included in OS X and Windows; [Node.js](https://nodejs.org/en/) on Linux). Once you have these installed, run the following commands:
+DevDocs requires Ruby 2.6.x, libcurl, and a JavaScript runtime supported by [ExecJS](https://github.com/rails/execjs#readme) (included in OS X and Windows; [Node.js](https://nodejs.org/en/) on Linux). Once you have these installed, run the following commands:
 
 ```
 git clone https://github.com/freeCodeCamp/devdocs.git && cd devdocs