adding the nice logo header

Author: kbarnhart

rockblock/introduction_to_rockblock.ipynb

@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "<a href=\"http://landlab.github.io\"><img style=\"float: left; height: 175px; width: 175px\" src=\"../landlab_logo_picture.jpg\"></a> <h3 style=\"margin: 117px 0 0 185px; font-weight: 300;\">a toolkit for modeling earth surface processes</h3>"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -16,7 +23,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "import os\n",
@@ -95,7 +104,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "imshow_grid(mg, 'K_sp')"
@@ -117,7 +128,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "nts = 500\n",
@@ -178,7 +191,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "imshow_grid(mg, 'topographic__elevation', cmap='viridis')"
@@ -198,7 +213,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "hvds = hv.Dataset(ds)\n",
@@ -215,7 +232,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "%opts Image (cmap='viridis')\n",
@@ -248,7 +267,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "mg2 = RasterModelGrid((100, 100), 200)\n",
@@ -310,7 +331,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "imshow_grid(mg2, 'topographic__elevation')"
@@ -328,7 +351,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "volcanic_deposits = np.zeros(mg2.size('node'))\n",
@@ -355,7 +380,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "for i in range(half_nts, nts):\n",
@@ -381,7 +408,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "imshow_grid(mg2, 'topographic__elevation')"
@@ -397,7 +426,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "%opts Image (cmap='viridis')\n",