Merge branch 'master' of blesson/elxr into master

linux.js

+module.exports = {
+        verifyAndInstall() {
+            return Promise.resolve(true);
+        }
+
+        , acquireElevationState(__isElevated) {
+            //__isElevated = false;
+            if (__isElevated === null) { return Promise.resolve(__isElevated) }
+            else
+                return Promise.resolve(__isElevated);
+        }
+
+        , verifyAndInstallPrerequisites() {
+            return Promise.resolve(true);
+        }
+        , whichOS() {
+                console.log("OS - Linux");
+        }
+};

win32.js

+module.exports = {
+        verifyAndInstall(){
+            return getTaskCheckExists(this.shellcmd, { ignorefailures: true })().then((exists) => {
+            if(exists) {
+              // return any(['git', ['config', '--global', '-l']].map(getshelltask))
+              return this.postinstallsteps.bind(this)()
+            }
+              return this.install();
+          });
+          },
+
+        acquireElevationState(__isElevated) {
+          if (__isElevated === null) {
+            return nodeShellExec("fsutil", ["dirty", "query", "C:"], {
+              inherit: true
+              // , shell: true
+              , stdio: 'ignore'
+              , env: process.env
+              , title: `check privileged execution mode using "fsutil dirty query C:"`
+            }).then((exitcode) => {
+              console.log('Elevated')
+              __isElevated = true;
+              return true;
+            }).catch(() => {
+              __isElevated = false;
+              console.log('Not Elevated');
+              return false;
+            });
+          }
+          else return Promise.resolve(__isElevated);
+        },
+
+}
+