add licensing

Makefile

@@ -9,9 +9,9 @@ GOSRC+=go.mod go.sum
 RM?=rm -f
 
 secretshop: $(GOSRC)
-	cd src && $(GO) build $(GOFLAGS) \
+	$(GO) build $(GOFLAGS)  \
 		-ldflags "-s -w" \
-		-o ../$@
+		-o ../$@ src/*
 
 all: secretshop
 

README.md

@@ -48,3 +48,17 @@ Either run the executable directly or use the SystemD unit file
 ## Caveats
 Currently does not support transient certificates
 Only handles whitelisting for certificate authorization
+
+## Licensing
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.