Updates to gradle6 and fixes build for intellij on macos

.gitignore

@@ -1,9 +1,16 @@
 *.iml
 .gradle
-/local.properties
-/.idea/workspace.xml
-/.idea/libraries
+local.properties
+
+# intellij configs
+.idea/workspace.xml
+.idea/libraries
+.idea/caches
+
 .DS_Store
 /build
 /captures
 .externalNativeBuild
+
+# local dev env vars
+.envrc

README.macos.md

@@ -0,0 +1,18 @@
+# Getting started on MacOS
+
+## Setup
+- Download Intellij IDEA CE: https://www.jetbrains.com/idea/download/
+- Install oracle JDK 8: https://www.oracle.com/java/technologies/javase-jdk8-downloads.html
+- Install the android SDK via homebrew: https://formulae.brew.sh/cask/android-sdk
+
+## Repo clone and setup
+- Clone the git repo
+- Export `JAVA_HOME` and `ANDROID_HOME` variables similar to these:
+    ```sh
+    ANDROID_HOME=/usr/local/share/android-sdk
+    JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_241.jdk/Contents/Home
+    ```
+
+- Open the project in IntelliJ
+- Follow Intellij's prompts to point it to your preinstalled JDK8 and Android SDK using the same paths as your earlier environment variables.
+- Click Build -> Build Project.

app/build.gradle

@@ -29,6 +29,6 @@ dependencies {
     compile 'com.android.support:appcompat-v7:25.2.0'
     compile 'com.android.support.constraint:constraint-layout:1.0.2'
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:design:26.0.0-alpha1'
-    compile files('C:/Users/Yo7A/Desktop/HealthWatcher/lib/commons-math3-3.6.1.jar')
+    compile 'com.android.support:design:25.4.0'
+    compile files('lib/commons-math3-3.6.1.jar')
 }

build.gradle

@@ -2,10 +2,11 @@
 
 buildscript {
     repositories {
+        google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.2'
+        classpath 'com.android.tools.build:gradle:3.6.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -14,6 +15,7 @@ buildscript {
 
 allprojects {
     repositories {
+        google()
         jcenter()
     }
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Mar 13 19:36:18 EET 2017
+#Tue Mar 24 11:28:00 CDT 2020
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.2.2-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+zipStoreBase=GRADLE_USER_HOME