[ruby/abbrev] Bump version to 0.1.1

https://github.com/ruby/abbrev/commit/8c3debac5a

lib/abbrev.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = "abbrev"
-  spec.version       = "0.1.0"
+  spec.version       = "0.1.1"
   spec.authors       = ["Akinori MUSHA"]
   spec.email         = ["knu@idaemons.org"]