Readme updated

README.md

@@ -134,6 +134,9 @@ export PYTHON_HEADERS=/usr/include/python3.5m
 
 export LIBQWT_HOME=/usr/local/qwt-6.1.4-svn/lib
 export LIBQWT_HEADERS=/usr/local/qwt-6.1.4-svn/include
+
+export LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+${LD_LIBRARY_PATH}:}$LIBQWT_HOME
+export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:${SYSTEMC_HOME}/lib-$SYSTEMC_TARGET_ARCH
 ```
 
 ### Buiding with QTCreator
@@ -172,7 +175,7 @@ use **qmake** to generate a Makefile and then compile the project.
 $ mkdir build
 $ cd build
 $ qmake ../DRAMSys/DRAMSys.pro
-$ make
+$ make -j4
 ```
 
 The compilation generates executable binary files **DRAMSys** and
@@ -878,7 +881,9 @@ For more information check the documentation in [DRAMSylva folder](DRAMSys/libra
 
   GenerationExtension is added in TracePlayer and DramExtension is added in Arbiter.
 
-  DramExtension indicates the decoded address (channel, bank, colums, row) and the socket id (thread) of a payload. It is added in the Arbiter and is sent to the Controller.
+  DramExtension indicates the decoded address (channel, bank, colums, row) and
+  the socket id (thread) of a payload. It is added in the Arbiter and is sent
+  to the Controller.
   ![Payload Extension information](DRAMSys/docs/images/PayloadExtension.png)
   
 - **Transaction object with Memory Manager**