allow flexibility in console width

Author: ianfixes

Diff for: CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Changed
 - Update .gitattributes so we have consistent line endings
+- Test runner detects console width if possible, allowing variable width from 80-132 chars
 
 ### Deprecated
 

Diff for: exe/arduino_ci.rb

@@ -4,7 +4,12 @@
 require 'pathname'
 require 'optparse'
 
-WIDTH = 80
+# be flexible between 80 and 132 cols of output
+WIDTH = begin
+  [132, [80, IO.console.winsize[1] - 2].max].min
+rescue
+  80
+end
 VAR_CUSTOM_INIT_SCRIPT = "CUSTOM_INIT_SCRIPT".freeze
 VAR_USE_SUBDIR         = "USE_SUBDIR".freeze
 VAR_EXPECT_EXAMPLES    = "EXPECT_EXAMPLES".freeze