Update Glog installation in README.md

README.md

@@ -74,15 +74,21 @@ libgflags.a will be installed at **/usr/local/lib**
     
 -   Build and install with:
 
-        $ cd glog
-        $ ./configure --with-gflags=/usr/local/
-        $ make
-        $ sudo make install
-    
+        $ ./autogen.sh
+        $ ./configure --with-gflags=/usr/local/
+        $ make
+        $ sudo make install
+
 libglog.so will be installed at **/usr/local/lib**
 
 -   Tourbleshooting:
 
+    **./autogen.sh fails with './autogen.sh: autoreconf: not found'**
+
+    In a fresh installation you will probably need to install autoreconf running
+    
+        $ sudo make install dh-autoreconf 
+
     If the `make` command fails with the error: `/bin/bash: aclocal-1.14: command not found`, install Glog with the following commands:
         
         $ cd glog