Try to prepare sha256 and use it on install

Author: spk

ci/before_deploy.sh

@@ -7,6 +7,9 @@ package() {
     fi
 
     cp -f target/$TARGET/release/$BIN_NAME bin/$BIN_NAME_TAG
+    cd bin || return 1
+    sha256sum "$BIN_NAME_TAG" | tee "$BIN_NAME_TAG.sha256"
+    cd -
 }
 
 release_tag() {

install.sh

@@ -11,18 +11,23 @@ name=languageclient
 
 try_curl() {
     command -v curl > /dev/null && \
-        curl --fail --location "$1" --output bin/$name
+        curl --fail --location "$1" --output bin/$name && \
+        curl --fail --location "$1.sha256" --output bin/$name.sha256
 }
 
 try_wget() {
     command -v wget > /dev/null && \
-        wget --output-document=bin/$name "$1"
+        wget --output-document=bin/$name "$1" && \
+        wget --output-document=bin/$name.sha256 "$1"
 }
 
 download() {
     echo "Downloading bin/${name}..."
     url=https://github.com/autozimu/LanguageClient-neovim/releases/download/$version/${1}
     if (try_curl "$url" || try_wget "$url"); then
+        cd bin || return 1
+        sha256sum -c "$name.sha256" || return 1
+        cd -
         chmod a+x bin/$name
         return
     else