Adding GPG signing as recommended by man 8 pacman-key; SSH-agent improvements

PKGBUILD

@@ -1,14 +1,14 @@
 # Maintainer: Shikoba Kage <darkfeather@aninix.net>
-pkgname=shadowarch
-pkgver=0.1.310c778
-pkgver() {
-    printf "0.1.""$(git rev-parse --short HEAD)"
-}
+pkgname="$(git config remote.origin.url | rev | cut -f 1 -d '/' | rev | sed 's/.git$//' | tr '[[:upper:]]' '[[:lower:]]')"
+pkgver="$(git describe --tag --abbrev=0)"."$(git rev-parse --short HEAD)"
 pkgrel=1
+pkgrel() { 
+    git log "$(git describe --tag --abbrev=0)"..HEAD | grep -c commit
+}
 epoch=
-pkgdesc="AniNIX::ShadowArch \\\\ AniNIX preferred shell environment"
+pkgdesc="$(head -n 1 README)"
 arch=("x86_64")
-url="https://aninix.net/foundation/ShadowArch"
+url="https://aninix.net/foundation/${pkgname}"
 license=('custom')
 groups=()
 depends=('curl' 'grep' 'bash>=4.4' 'git>=2.13')