Merge pull request ggobi#9 from kaisernahid/master

Fixed minor typos in INSTALL

INSTALL

@@ -14,12 +14,18 @@ Mac OS X instructions
 ---------------------
 
 1. Make sure that you have a recent version of xcode installed.
-2. Install Qt from by downloading and running the installer at
+2. Install Qt by downloading and running the installer at
    http://qt.nokia.com/downloads/sdk-mac-os-cpp.
 3. Install cmake (version 2.8.1 or later); obtain it from cmake.org.
 4. Check your PATH, ensuring that both are visible.
 5. Run R CMD INSTALL qtbase.
 
+Linux instructions
+------------------
+
+1. Install the Qt SDK (i.e., devel) >= 4.0 and cmake >= 2.8.1 packages.
+2. Run R CMD INSTALL qtbase.
+
 Windows instructions
 --------------------
 
@@ -34,12 +40,6 @@ Windows instructions
 8. Make sure that the machine is properly configured to build binary packages.
 9. Using command.exe, run R CMD INSTALL qtbase.
 
-Linux instructions
-------------------
-
-1. Install the Qt SDK (i.e., devel) >= 4.0 and cmake >= 2.8.1 packages.
-2. R CMD INSTALL qtbase.
-
 ===================
 Building on Windows
 ===================