updated gemspec

sf.gemspec

@@ -6,10 +6,10 @@ require 'sf/version'
 Gem::Specification.new do |spec|
   spec.name          = "sf"
   spec.version       = Sf::VERSION
-  spec.authors       = ["IJ Kim"]
-  spec.email         = ["ij@internet2.edu"]
+  spec.authors       = ["TSG Dev Team"]
+  spec.email         = ["tsg@internet2.edu"]
   spec.description   = %q{Interacting with Internet2 Salesforce instance}
-  spec.summary       = %q{It can be used in applications that need to access Interne    t2 Salesforce instance}
+  spec.summary       = %q{It can be used in applications that need to access Internet2 Salesforce instance}
   spec.homepage      = "http://www.internet2.edu"
   spec.license       = "MIT"
 
@@ -18,7 +18,7 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_dependency "restforce", "~> 1.4.3"
+  spec.add_dependency "restforce", "~> 1.4"
   spec.add_development_dependency "bundler", "~> 1.3"
-  spec.add_development_dependency "rake"
+  spec.add_development_dependency "rake", "~> 10.3"
 end