Remove linux install and uninstall scripts. Add INSTALL.txt instructions

INSTALL.txt

@@ -0,0 +1,40 @@
+# Installing Fritzing
+
+Please make sure your system satisfies one of these requirements:
+Windows 10
+Windows 7 was reported to work, too
+Mac - OSX 10.14 and up, though 10.13 might work too. MacOS 10.15 is currently untested.
+Linux - a fairly recent linux distro with libc >= 2.6
+
+Start downloading the Fritzing package that's right for you.
+Unzip your Fritzing folder somewhere convenient on your hard drive.
+This may also be a good time for you to create a shortcut to the Fritzing application.
+A free unzipping program can be found here, should you need it.
+
+## Notes on Windows
+
+Unzipping Fritzing might be very slower than the download itself. We recommend
+using 7zip
+
+To start Fritzing on Windows: double-click fritzing.exe
+
+## Notes on Linux
+To start Fritzing double-click Fritzing, or try ./Fritzing in your shell window
+
+Fritzing uses the Qt5 libraries. On Ubuntu, they can be installed like this:
+
+"sudo apt install libqt5xml5 libqt5sql5 libqt5serialport5"
+
+
+## Notes on macOS
+To start Fritzing on macOS double-click the Fritzing application
+
+Recent versions of macOS do not allow "unverified" software to be launched directly. In order to run Fritzing, you will need to either:
+
+1a. right-click the Fritzing icon and select "Open"
+2a. in the warning dialog, click "Open"
+or, to get rid of the warning permanently:
+1b. go to the System Preferences
+2b. open the Security & Privacy page
+3b. unlock it by clicking the lock in the lower left corner
+4b. set it to allow app downloads from anywhere

tools/deploy_fritzing_mac.sh

@@ -30,7 +30,7 @@ echo "$supportdir"
 
 echo ">> copy support files"
 cd "$workingdir"
-cp -rf sketches help translations README.md LICENSE.CC-BY-SA LICENSE.GPL2 LICENSE.GPL3 "$supportdir/"
+cp -rf sketches help translations INSTALL.txt README.md LICENSE.CC-BY-SA LICENSE.GPL2 LICENSE.GPL3 "$supportdir/"
 
 echo ">> clean translations"
 cd "$supportdir"

tools/linux_release_script/release.sh

@@ -83,7 +83,7 @@ echo "making release folder: ${release_folder}"
 mkdir -p "${release_folder}"
 
 echo "copying release files"
-cp -rf sketches/ help/ translations/ Fritzing.sh Fritzing.1 org.fritzing.Fritzing.desktop fritzing.rc org.fritzing.Fritzing.appdata.xml install_fritzing.sh README.md LICENSE.CC-BY-SA LICENSE.GPL2 LICENSE.GPL3 "$release_folder/"
+cp -rf sketches/ help/ translations/ Fritzing.sh Fritzing.1 org.fritzing.Fritzing.desktop fritzing.rc org.fritzing.Fritzing.appdata.xml INSTALL.txt README.md LICENSE.CC-BY-SA LICENSE.GPL2 LICENSE.GPL3 "$release_folder/"
 mkdir -p "${release_folder}/icons"
 cp resources/system_icons/linux/* "$release_folder/icons/"
 mv Fritzing "${release_folder}/"

tools/release_fritzing.bat

@@ -150,6 +150,7 @@ xcopy /q .\sketches %DESTDIR%\deploy\sketches /E  /I
 xcopy /q .\help %DESTDIR%\deploy\help /E  /I
 
 copy .\README.md %DESTDIR%\deploy\README.md
+copy .\INSTALL.txt %DESTDIR%\deploy\INSTALL.txt
 copy .\LICENSE.GPL2 %DESTDIR%\deploy\LICENSE.GPL2
 copy .\LICENSE.GPL3 %DESTDIR%\deploy\LICENSE.GPL3
 copy .\LICENSE.CC-BY-SA %DESTDIR%\deploy\LICENSE.CC-BY-SA