diff --git a/Dangerfile b/Dangerfile
new file mode 100644
index 0000000..2c55f10
--- /dev/null
+++ b/Dangerfile
@@ -0,0 +1,13 @@
+# Sometimes it's a README fix, or something like that - which isn't relevant for
+# including in a project's CHANGELOG for example
+declared_trivial = github.pr_title.include? "#trivial"
+
+# Make it more obvious that a PR is a work in progress and shouldn't be merged yet
+warn("PR is classed as Work in Progress") if github.pr_title.include? "[WIP]"
+
+# Warn when there is a big PR
+warn("Big PR") if git.lines_of_code > 500
+
+# Don't let testing shortcuts get into master by accident
+#fail("fdescribe left in tests") if `grep -r fdescribe specs/ `.length > 1
+#fail("fit left in tests") if `grep -r fit specs/ `.length > 1
diff --git a/Gemfile b/Gemfile
index 1adc85c..74a3006 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,9 +1,10 @@
 # A sample Gemfile
 source 'https://rubygems.org'
 
+gem 'danger'
+gem 'pry'
 gem 'rake'
-gem 'rubocop'
 gem 'rspec'
-gem 'serverspec'
-gem 'pry'
+gem 'rubocop'
 gem 'ruby-progressbar'
+gem 'serverspec'
diff --git a/Gemfile.lock b/Gemfile.lock
index 7d0adbe..e70ada3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,15 +1,47 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    addressable (2.5.0)
+      public_suffix (~> 2.0, >= 2.0.2)
     ast (2.3.0)
+    claide (1.0.1)
+    claide-plugins (0.9.2)
+      cork
+      nap
+      open4 (~> 1.3)
     coderay (1.1.1)
+    colored (1.2)
+    cork (0.2.0)
+      colored (~> 1.2)
+    danger (4.0.3)
+      claide (~> 1.0)
+      claide-plugins (>= 0.9.2)
+      colored (~> 1.2)
+      cork (~> 0.1)
+      faraday (~> 0.9)
+      faraday-http-cache (~> 1.0)
+      git (~> 1)
+      kramdown (~> 1.5)
+      octokit (~> 4.2)
+      terminal-table (~> 1)
     diff-lcs (1.2.5)
+    faraday (0.10.0)
+      multipart-post (>= 1.2, < 3)
+    faraday-http-cache (1.3.1)
+      faraday (~> 0.8)
+    git (1.3.0)
+    kramdown (1.13.1)
     method_source (0.8.2)
     multi_json (1.12.1)
+    multipart-post (2.0.0)
+    nap (1.1.0)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-ssh (3.2.0)
     net-telnet (0.1.1)
+    octokit (4.6.2)
+      sawyer (~> 0.8.0, >= 0.5.3)
+    open4 (1.3.4)
     parser (2.3.1.2)
       ast (~> 2.2)
     powerpack (0.1.1)
@@ -17,6 +49,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
+    public_suffix (2.0.4)
     rainbow (2.1.0)
     rake (11.2.2)
     rspec (3.5.0)
@@ -42,6 +75,9 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.8.1)
+    sawyer (0.8.1)
+      addressable (>= 2.3.5, < 2.6)
+      faraday (~> 0.8, < 1.0)
     serverspec (2.36.0)
       multi_json
       rspec (~> 3.0)
@@ -54,6 +90,8 @@ GEM
       net-ssh (>= 2.7, < 4.0)
       net-telnet
       sfl
+    terminal-table (1.7.0)
+      unicode-display_width (~> 1.1)
     unicode-display_width (1.1.0)
 
 PLATFORMS
@@ -61,6 +99,7 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
+  danger
   pry
   rake
   rspec