[Docs] capitalize C++

README.markdown

@@ -32,7 +32,7 @@
 
 ## Installation
 
-If you're running a system without prepackaged binary available, which means you're going to install nodejs or io.js from its source code, you need to make sure your system has a c++ compiler. For OS X, Xcode will work, for Debian/Ubuntu based GNU/Linux, the `build-essential` and `libssl-dev` packages work.
+If you're running a system without prepackaged binary available, which means you're going to install nodejs or io.js from its source code, you need to make sure your system has a C++ compiler. For OS X, Xcode will work, for Debian/Ubuntu based GNU/Linux, the `build-essential` and `libssl-dev` packages work.
 
 **Note:** `nvm` does not support Windows (see [#284](https://github.com/creationix/nvm/issues/284)). Two alternatives exist, which are neither supported nor developed by us:
  - [nvm-windows](https://github.com/coreybutler/nvm-windows)

nvm.sh

@@ -1889,7 +1889,7 @@ nvm_install_source() {
   esac
   if nvm_has "clang++" && nvm_has "clang" && nvm_version_greater_than_or_equal_to nvm_clang_version 3.5; then
     if [ -z "${CC-}" ] || [ -z "${CXX-}" ] ; then
-      nvm_echo "Clang v3.5+ detected! CC or CXX not specified, will use Clang as c/c++ compiler!"
+      nvm_echo "Clang v3.5+ detected! CC or CXX not specified, will use Clang as C/C++ compiler!"
       MAKE_CXX="CC=${CC:-cc} CXX=${CXX:-c++}"
     fi
   fi