add header component

src/app/header/header.component.css

@@ -0,0 +1,5 @@
+.fill-remaining-space {
+  /* This fills the remaining space, by using flexbox.
+     Every toolbar row uses a flexbox row layout. */
+  flex: 1 1 auto;
+}

src/app/header/header.component.html

@@ -0,0 +1,11 @@
+<mat-toolbar color="primary">
+  <span>Sartography</span>
+
+  <!-- This fills the remaining space of the current row -->
+  <span class="fill-remaining-space"></span>
+
+  <span>Where are we?
+    <mat-icon color="accent">build</mat-icon>
+    <mat-icon color="warn">bug_report</mat-icon>
+  </span>
+</mat-toolbar>

src/app/header/header.component.spec.ts

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { HeaderComponent } from './header.component';
+
+describe('HeaderComponent', () => {
+  let component: HeaderComponent;
+  let fixture: ComponentFixture<HeaderComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ HeaderComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(HeaderComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/header/header.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-header',
+  templateUrl: './header.component.html',
+  styleUrls: ['./header.component.css']
+})
+export class HeaderComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit() {
+  }
+
+}