diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..82981c2
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,48 @@
+PATH
+  remote: .
+  specs:
+    file_manipulator (0.0.1)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    byebug (9.0.5)
+    coderay (1.1.1)
+    diff-lcs (1.2.5)
+    method_source (0.8.2)
+    pry (0.10.4)
+      coderay (~> 1.1.0)
+      method_source (~> 0.8.1)
+      slop (~> 3.4)
+    pry-byebug (3.4.0)
+      byebug (~> 9.0)
+      pry (~> 0.10)
+    rake (10.5.0)
+    rspec (3.5.0)
+      rspec-core (~> 3.5.0)
+      rspec-expectations (~> 3.5.0)
+      rspec-mocks (~> 3.5.0)
+    rspec-core (3.5.3)
+      rspec-support (~> 3.5.0)
+    rspec-expectations (3.5.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.5.0)
+    rspec-mocks (3.5.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.5.0)
+    rspec-support (3.5.0)
+    slop (3.6.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bundler (~> 1.13)
+  file_manipulator!
+  pry (~> 0.10.4)
+  pry-byebug (~> 3.4.0)
+  rake (~> 10.0)
+  rspec (~> 3.0)
+
+BUNDLED WITH
+   1.13.0
diff --git a/exe/file_manipulator b/exe/file_manipulator
old mode 100644
new mode 100755
diff --git a/file_manipulator.gemspec b/file_manipulator.gemspec
index 6c3eccd..e0e2434 100644
--- a/file_manipulator.gemspec
+++ b/file_manipulator.gemspec
@@ -9,20 +9,11 @@ Gem::Specification.new do |spec|
   spec.authors       = ["Atsushi Ishida"]
   spec.email         = ["gipcompany@gmail.com"]
 
-  spec.summary       = %q{TODO: Write a short summary, because Rubygems requires one.}
-  spec.description   = %q{TODO: Write a longer description or delete this line.}
-  spec.homepage      = "TODO: Put your gem's website or public repo URL here."
+  spec.summary       = %q{Manipulate Files}
+  spec.description   = %q{Manipulate (Split/Merge) Files}
+  spec.homepage      = "https://github.com/gipcompany/file_manipulator"
   spec.license       = "MIT"
 
-  # Prevent pushing this gem to RubyGems.org. To allow pushes either set the 'allowed_push_host'
-  # to allow pushing to a single host or delete this section to allow pushing to any host.
-  if spec.respond_to?(:metadata)
-    spec.metadata['allowed_push_host'] = "TODO: Set to 'http://mygemserver.com'"
-  else
-    raise "RubyGems 2.0 or newer is required to protect against " \
-      "public gem pushes."
-  end
-
   spec.files         = `git ls-files -z`.split("\x0").reject do |f|
     f.match(%r{^(test|spec|features)/})
   end
@@ -33,4 +24,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 1.13"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"
+  spec.add_development_dependency "pry", '~> 0.10.4'
+  spec.add_development_dependency "pry-byebug", '~> 3.4.0'
 end