chore: refine handout script, update .gitignore accordingly

.gitignore

@@ -55,3 +55,6 @@ dkms.conf
 # MacOS .DS_Store file
 **/.DS_Store
 **/._.DS_Store
+
+# Ignore handout files
+handout/

makecopy

@@ -4,9 +4,13 @@
 GE_TXATT=0
 GE_RXATT=25
 
-DST_DIR=`pwd`
+DST_DIR="$(pwd)/handout"
 PROJECT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 
+echo ${DST_DIR}
+
+mkdir -p ${DST_DIR}
+
 echo "Creating <df_datalink_ge>..."
 cp -rL $PROJECT_DIR/df_datalink_ge/src $DST_DIR/df_datalink_ge
 sed -i'' -e "s/antConfig->rfTxMgc = 0;/antConfig->rfTxMgc = $GE_TXATT;/g" $DST_DIR/df_datalink_ge/networking/phy_layer/phy_antenna.c