Added version files for release tarball. Fixes #40 (#86)

I3LOCK_VERSION

@@ -0,0 +1 @@
+2.8-non-git

Makefile

@@ -1,3 +1,5 @@
+TOPDIR=$(shell pwd)
+
 INSTALL=install
 PREFIX=/usr
 SYSCONFDIR=/etc
@@ -21,9 +23,15 @@ LIBS += -lm
 FILES:=$(wildcard *.c)
 FILES:=$(FILES:.c=.o)
 
-VERSION:=$(shell git describe --tags --abbrev=0)
-GIT_VERSION:="$(shell git describe --tags --always) ($(shell git log --pretty=format:%cd --date=short -n1))"
-CPPFLAGS += -DVERSION=\"${GIT_VERSION}\"
+ifeq ($(wildcard .git),)
+  # not in git repository
+  VERSION := $(shell [ -f $(TOPDIR)/I3LOCK_VERSION ] && cat $(TOPDIR)/I3LOCK_VERSION | cut -d '-' -f 1)
+  I3LOCK_VERSION := '$(shell [ -f $(TOPDIR)/I3LOCK_VERSION ] && cat $(TOPDIR)/I3LOCK_VERSION)'
+else
+  VERSION:=$(shell git describe --tags --abbrev=0)
+  I3LOCK_VERSION:="$(shell git describe --tags --always) ($(shell git log --pretty=format:%cd --date=short -n1))"
+endif
+CPPFLAGS += -DVERSION=\"${I3LOCK_VERSION}\"
 
 .PHONY: install clean uninstall
 
@@ -49,6 +57,6 @@ dist: clean
 	[ ! -e i3lock-${VERSION}.tar.bz2 ] || rm i3lock-${VERSION}.tar.bz2
 	mkdir i3lock-${VERSION}
 	cp *.c *.h i3lock.1 i3lock.pam Makefile LICENSE README.md CHANGELOG i3lock-${VERSION}
-	sed -e 's/^GIT_VERSION:=\(.*\)/GIT_VERSION:=$(shell /bin/echo '${GIT_VERSION}' | sed 's/\\/\\\\/g')/g;s/^VERSION:=\(.*\)/VERSION:=${VERSION}/g' Makefile > i3lock-${VERSION}/Makefile
+	sed -e 's/^I3LOCK_VERSION:=\(.*\)/I3LOCK_VERSION:=$(shell /bin/echo '${I3LOCK_VERSION}' | sed 's/\\/\\\\/g')/g;s/^VERSION:=\(.*\)/VERSION:=${VERSION}/g' Makefile > i3lock-${VERSION}/Makefile
 	tar cfj i3lock-${VERSION}.tar.bz2 i3lock-${VERSION}
 	rm -rf i3lock-${VERSION}