add updated reward distribution script and .conf file template

scripts/rewards/sendrewards.conf

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+WALLET_FILE="$HOME/.skycoin/wallets/<wallet-filename>.wlt"
+FROM_ADDRESS="HWteH5YSjqax9dnvkHsFPU4JzHiTxugbet"
+REWARD_WL_SK=<sec-key-of-pk-whitelisted-by-reward-system>
+REWARD_SYS_URL="dmsg://036a70e6956061778e1883e928c1236189db14dfd446df23d83e45c321b330c91f:80"

scripts/rewards/sendrewards.sh

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+#!/usr/bin/bash
+## source configuration file
+source sendrewards.conf
+## check that skycoin wallet is running
+skycoin-cli status ; [[ $? -ne 0 ]] && (echo 'skycoin wallet not running ; exiting' && exit 1)
+## check that skywire-reward.service isn't running to ensure rewards calculation not ongoing
+skywire dmsg curl $REWARD_SYS_URL/skycoin-rewards/s | jq -r '.'
+[[ "$(skywire dmsg curl $REWARD_SYS_URL/skycoin-rewards/s | jq -r '.active')" == "active"* ]] && echo "skywire-rewards are calculating - reward service active ; not executing distribution to avoid partial file download" && exit 0
+## preview current reward statistics
+source sendrewards.conf ; skywire dmsg curl  $REWARD_SYS_URL/$(skywire dmsg curl $REWARD_SYS_URL/skycoin-rewards/csv | sed 's/_rewardtxn0.csv/_stats.txt/g')
+## allow to accept or decline
+read -n 1 -p "Send rewards? [Y/n]: " user_input
+echo
+if [[ "$user_input" != "Y" && "$user_input" != "y" ]]; then
+  echo "exiting"
+  exit 0
+fi
+## get link to the latest CSV
+#skywire dmsg curl $REWARD_SYS_URL/skycoin-rewards/csv -s $REWARD_WL_SK
+## get reward csv data
+# skywire dmsg curl  $REWARD_SYS_URL/$(skywire dmsg curl $REWARD_SYS_URL/skycoin-rewards/csv -s $REWARD_WL_SK) -s $REWARD_WL_SK | tr -d ' ' | awk -F, '{printf "%s,%.3f\n", $1, int($2*1000)/1000}' |  grep -v '^,0.000$'
+skywire dmsg curl $REWARD_SYS_URL/reward -d "$(skycoin-cli createRawTransaction $WALLET_FILE -a $FROM_ADDRESS --csv <(skywire dmsg curl  $REWARD_SYS_URL/$(skywire dmsg curl $REWARD_SYS_URL/skycoin-rewards/csv -s $REWARD_WL_SK) -s $REWARD_WL_SK | tr -d ' ' | awk -F, '{printf "%s,%.3f\n", $1, int($2*1000)/1000}' |  grep -v '^,0.000$'))" -s $REWARD_WL_SK