Prepared for first release

- Creating db file in home dir or DB_FILE env variable
- Updated README with usages details
- Added GIF screencast

app/project_detail.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/gdamore/tcell"
+	"github.com/rivo/tview"
+)
+
+func prepareProjectDetail() {
+	deleteBtn := makeButton("Delete Project", deleteCurrentProject)
+	clearBtn := makeButton("Clear Completed Tasks", clearCompletedTasks)
+
+	deleteBtn.SetBackgroundColor(tcell.ColorRed)
+	projectDetailPane = tview.NewFlex().SetDirection(tview.FlexRow).
+		// AddItem(activeProjectName, 1, 1, false).
+		// AddItem(makeHorizontalLine(tcell.RuneS3, tcell.ColorGray), 1, 1, false).
+		AddItem(deleteBtn, 3, 1, false).
+		AddItem(blankCell, 1, 1, false).
+		AddItem(clearBtn, 3, 1, false).
+		AddItem(blankCell, 0, 1, false)
+
+	projectDetailPane.SetBorder(true).SetTitle("[::u]A[::-]ctions")
+}
+
+func deleteCurrentProject() {
+	if currentProject != nil && projectRepo.Delete(currentProject) == nil {
+		for i, _ := range tasks {
+			taskRepo.Delete(&tasks[i])
+		}
+
+		showMessage("Removed Project: " + currentProject.Title)
+		removeThirdCol()
+		taskList.Clear()
+		projectList.Clear()
+
+		loadProjectList()
+	}
+}
+
+func clearCompletedTasks() {
+	count := 0
+	for i, task := range tasks {
+		if task.Completed && taskRepo.Delete(&tasks[i]) == nil {
+			taskList.RemoveItem(i)
+			count++
+		}
+	}
+	showMessage(fmt.Sprintf("[yellow]%d tasks cleared!", count))
+}