Finish documentation changes

bin/pyspark

@@ -31,7 +31,7 @@ if [ ! -f "$FWDIR/RELEASE" ]; then
   ls "$FWDIR"/assembly/target/scala-$SCALA_VERSION/spark-assembly*hadoop*.jar >& /dev/null
   if [[ $? != 0 ]]; then
     echo "Failed to find Spark assembly in $FWDIR/assembly/target" >&2
-    echo "You need to build Spark with sbt assembly before running this program" >&2
+    echo "You need to build Spark with sbt/sbt assembly before running this program" >&2
     exit 1
   fi
 fi

bin/spark-class

@@ -104,7 +104,7 @@ if [ ! -f "$FWDIR/RELEASE" ]; then
   jars_list=$(ls "$FWDIR"/assembly/target/scala-$SCALA_VERSION/ | grep "spark-assembly.*hadoop.*.jar")
   if [ "$num_jars" -eq "0" ]; then
     echo "Failed to find Spark assembly in $FWDIR/assembly/target/scala-$SCALA_VERSION/" >&2
-    echo "You need to build Spark with 'sbt assembly' before running this program." >&2
+    echo "You need to build Spark with 'sbt/sbt assembly' before running this program." >&2
     exit 1
   fi
   if [ "$num_jars" -gt "1" ]; then

make-distribution.sh

@@ -95,7 +95,7 @@ export SPARK_HADOOP_VERSION
 export SPARK_YARN
 cd $FWDIR
 
-"sbt" "assembly/assembly"
+"sbt/sbt" "assembly/assembly"
 
 # Make directories
 rm -rf "$DISTDIR"