update readme and configure comments

README.md

@@ -13,7 +13,44 @@ rzmq is a message queue for serialized R objects.
 * ZMQ devices are not implemented yet, nor is zmq_poll.
 * Look for more features shortly.
 
+### Installation
+
+Binary packages for __OS-X__ or __Windows__ can be installed directly from CRAN:
+
+```r
+install.packages("rzmq")
+```
+
+#### Build from source
+
+Installation from source requires [`ZeroMQ`](http://zeromq.org/area:download). On __Debian__ or __Ubuntu__ use [libzmq3-dev](https://packages.debian.org/testing/libzmq3-dev):
+
+```
+sudo apt-get install -y libzmq3-dev
+```
+
+On __Fedora__ we need [zeromq3-devel](https://apps.fedoraproject.org/packages/zeromq3-devel):
+
+```
+sudo yum install zeromq3-devel
+````
+
+On __CentOS / RHEL__ we install [zeromq3-devel](https://apps.fedoraproject.org/packages/zeromq3-devel) via EPEL:
+
+```
+sudo yum install epel-release
+sudo yum install zeromq3-devel
+```
+
+On __OS-X__ use [zeromq](https://github.com/Homebrew/homebrew-core/blob/master/Formula/zeromq.rb) from Homebrew:
+
+```
+brew install zeromq
+```
+
+
 ### Usage
+
 A minimal example of remote execution.
 
 execute this R script on the remote server:

configure

@@ -54,17 +54,18 @@ CXXCPP=$(${R_HOME}/bin/R CMD config CXXCPP)
 CXXFLAGS=$(${R_HOME}/bin/R CMD config CXXFLAGS)
 CPPFLAGS=$(${R_HOME}/bin/R CMD config CPPFLAGS)
 
-# Test for libv8
+# Test for libzmq
 echo "#include $PKG_TEST_HEADER" | ${CXXCPP} ${CPPFLAGS} ${PKG_CFLAGS} ${CXXFLAGS} -xc++ - >/dev/null 2>&1
 
 if [ $? -ne 0 ]; then
   echo "------------------------- ANTICONF ERROR ---------------------------"
   echo "Configuration failed because $PKG_CONFIG_NAME was not found. Try installing:"
-  echo " * deb: $PKG_DEB_NAME (Debian, Ubuntu)"
-  echo " * rpm: $PKG_RPM_NAME (Fedora, EPEL)"
-  echo " * brew: $PKG_BREW_NAME (OSX) -- NOT regular v8! Tap from homebrew/versions"
+  echo " * deb: $PKG_DEB_NAME (Debian, Ubuntu, etc)"
+  echo " * rpm: $PKG_RPM_NAME (Fedora, CentOS, RHEL)"
   echo " * csw: $PKG_CSW_NAME (Solaris)"
-  echo "To use a custom libv8, set INCLUDE_DIR and LIB_DIR manually via:"
+  echo "If $PKG_CONFIG_NAME is already installed, check that 'pkg-config' is in your"
+  echo "PATH and PKG_CONFIG_PATH contains a $PKG_CONFIG_NAME.pc file. If pkg-config"
+  echo "is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:"
   echo "R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'"
   echo "--------------------------------------------------------------------"
   exit 1;