Move from Hoe to Bundler

This adds a gemspec and a Gemfile to the repository.

pg-ldap-sync.gemspec

@@ -0,0 +1,28 @@
+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require "pg_ldap_sync/version"
+
+Gem::Specification.new do |spec|
+  spec.name          = "pg-ldap-sync"
+  spec.version       = PgLdapSync::VERSION
+  spec.authors       = ["Lars Kanis"]
+  spec.email         = ["lars@greiz-reinsdorf.de"]
+
+  spec.summary       = %q{Use LDAP permissions in PostgreSQL}
+  spec.homepage      = "https://github.com/larskanis/pg-ldap-sync"
+  spec.license       = "MIT"
+
+  spec.files         = `git ls-files -z`.split("\x0").reject do |f|
+    f.match(%r{^(test|spec|features)/})
+  end
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+
+  spec.add_runtime_dependency "net-ldap", "~> 0.2"
+  spec.add_runtime_dependency "kwalify", "~> 0.7"
+  spec.add_development_dependency "ruby-ldapserver", "~> 0.3"
+  spec.add_development_dependency "minitest", "~> 5.0"
+  spec.add_development_dependency "bundler", "~> 1.16"
+  spec.add_development_dependency "rake", "~> 10.0"
+end