Make changes per @gribozavr suggestions

Author: BrandonMathis

README.md

@@ -66,6 +66,8 @@ compiler for C++14 support and create a symlink:
 
 ### Getting Sources for Swift and Related Projects
 
+     git clone https://github.com/apple/swift.git swift
+     cd swift
      ./utils/update-checkout --clone
 
 [CMake](http://cmake.org) is the core infrastructure used to configure builds of

utils/update-checkout

@@ -55,7 +55,6 @@ def update_working_copy(repo_path):
 
 def obtain_additional_swift_sources():
     additional_repos = {
-        'swift': 'https://github.com/apple/swift.git',
         'llvm': 'https://github.com/apple/swift-llvm.git',
         'clang': 'https://github.com/apple/swift-clang.git',
         'lldb': 'https://github.com/apple/swift-lldb.git',
@@ -79,7 +78,7 @@ By default, updates your checkouts of Swift, SourceKit, LLDB, and SwiftPM.""")
     parser.add_argument("-a", "--all",
         help="also update checkouts of llbuild, LLVM, and Clang",
         action="store_true")
-    parser.add_argument("-c", "--clone",
+    parser.add_argument("--clone",
         help="Obtain Sources for Swift and Related Projects",
         action="store_true")
     args = parser.parse_args()