Add gemspec

sapling.gemspec

@@ -0,0 +1,13 @@
+Gem::Specification.new do |s|
+  s.name        = 'Sapling'
+  s.version     = '0.1.0'
+  s.executables << 'sapling'
+  s.date        = '2017-10-14'
+  s.summary     = 'A Dialogue Tree Utility'
+  s.description = 'Create, edit, and traverse Dialogue trees'
+  s.authors     = ['Bill Niblock']
+  s.email       = 'azulien@gmail.com'
+  s.files       = Dir['lib/**/*.rb'] + Dir['bin/*']
+  s.homepage    = 'http://www.theinternetvagabond.com/sapling/'
+  s.license     = 'MIT'
+end